diff --git a/app/controllers/my_module_tags_controller.rb b/app/controllers/my_module_tags_controller.rb
index 308cf1f6d..87e5eac9a 100644
--- a/app/controllers/my_module_tags_controller.rb
+++ b/app/controllers/my_module_tags_controller.rb
@@ -1,7 +1,7 @@
 class MyModuleTagsController < ApplicationController
   before_action :load_vars
   before_action :check_view_permissions, only: [:index_edit]
-  before_action :check_create_permissions, only: [:new, :create]
+  before_action :check_create_permissions, only: [:create]
   before_action :check_destroy_permissions, only: [:destroy]
 
   def index_edit
@@ -22,12 +22,6 @@ class MyModuleTagsController < ApplicationController
     end
   end
 
-  def new
-    session[:return_to] ||= request.referer
-    @mt = MyModuleTag.new(my_module: @my_module)
-    init_gui
-  end
-
   def create
     @mt = MyModuleTag.new(mt_params.merge(my_module: @my_module))
     @mt.created_by = current_user
diff --git a/app/controllers/my_modules_controller.rb b/app/controllers/my_modules_controller.rb
index 4707c8f46..a222066b4 100644
--- a/app/controllers/my_modules_controller.rb
+++ b/app/controllers/my_modules_controller.rb
@@ -3,7 +3,7 @@ class MyModulesController < ApplicationController
   include OrganizationsHelper
 
   before_action :load_vars, only: [
-    :show, :edit, :update, :destroy,
+    :show, :update, :destroy,
     :description, :due_date, :protocols, :results,
     :samples, :activities, :activities_tab,
     :assign_samples, :unassign_samples,
@@ -11,7 +11,7 @@ class MyModulesController < ApplicationController
     :samples_index, :archive]
   before_action :load_vars_nested, only: [:new, :create]
   before_action :check_edit_permissions, only: [
-    :edit, :update, :description, :due_date
+    :update, :description, :due_date
   ]
   before_action :check_destroy_permissions, only: [:destroy]
   before_action :check_view_info_permissions, only: [:show]
@@ -34,7 +34,6 @@ class MyModulesController < ApplicationController
 
   def show
     respond_to do |format|
-      format.html
       format.json {
         render :json => {
           :html => render_to_string({
@@ -131,10 +130,6 @@ class MyModulesController < ApplicationController
     end
   end
 
-  def edit
-    session[:return_to] ||= request.referer
-  end
-
   def update
     @my_module.assign_attributes(my_module_params)
     @my_module.last_modified_by = current_user
@@ -192,11 +187,6 @@ class MyModulesController < ApplicationController
 
     respond_to do |format|
       if saved
-        format.html {
-          flash[:success] = t("my_modules.update.success_flash",
-            module: @my_module.name)
-          redirect_to(:back)
-        }
         format.json {
           alerts = []
           alerts << "alert-red" if @my_module.is_overdue?
@@ -219,9 +209,6 @@ class MyModulesController < ApplicationController
           }
         }
       else
-        format.html {
-          render :edit
-        }
         format.json {
           render json: @my_module.errors,
             status: :unprocessable_entity
diff --git a/app/controllers/project_comments_controller.rb b/app/controllers/project_comments_controller.rb
index bca0ff747..ca9c9b1e0 100644
--- a/app/controllers/project_comments_controller.rb
+++ b/app/controllers/project_comments_controller.rb
@@ -57,12 +57,6 @@ class ProjectCommentsController < ApplicationController
           )
         )
 
-        format.html {
-          flash[:success] = t(
-            "project_comments.create.success_flash",
-            project: @project.name)
-          redirect_to projects_path
-        }
         format.json {
           render json: {
             html: render_to_string(
@@ -76,7 +70,6 @@ class ProjectCommentsController < ApplicationController
         }
       else
         response.status = 400
-        format.html { render :new }
         format.json {
           render json: {
             errors: @comment.errors.to_hash(true)
diff --git a/app/controllers/result_comments_controller.rb b/app/controllers/result_comments_controller.rb
index 784fd2b13..09f3c6533 100644
--- a/app/controllers/result_comments_controller.rb
+++ b/app/controllers/result_comments_controller.rb
@@ -56,11 +56,6 @@ class ResultCommentsController < ApplicationController
           )
         )
 
-        format.html {
-          flash[:success] = t(
-            "result_comments.create.success_flash")
-          redirect_to session.delete(:return_to)
-        }
         format.json {
           render json: {
             html: render_to_string(
@@ -75,7 +70,6 @@ class ResultCommentsController < ApplicationController
         }
       else
         response.status = 400
-        format.html { render :new }
         format.json {
           render json: {
             errors: @comment.errors.to_hash(true)
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 1f1fdff38..bbf4981ef 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -235,8 +235,6 @@ en:
       page_title: "Project's experiments"
     samples:
       head_title: "%{project} | Sample library"
-    activities:
-      head_title: "%{project} | Activity"
     reports:
       print_title: "%{project} | Report"
       index:
@@ -443,27 +441,12 @@ en:
       error_flash: "User %{user} not removed from project <strong>%{project}</strong>."
 
   my_modules:
-    show:
-      head_title: "%{project} | %{module}"
-      archive_action: "Archive"
-      archive_confirm_text: "All samples will be unassigned from the
-        task when archiving. Are you sure to archive task?"
-    edit:
-      head_title: "%{project} | %{module} | Edit"
-      title: "Edit task %{module}"
-      name: "Task name"
-      due_date: "Due date"
-      save: "Save task"
     description:
       title: "Edit task %{module} description"
       label: "Description"
     due_date:
       title: "Edit task %{module} due date"
       label: "Due date"
-    update:
-      success_flash: "Successfully modified task <strong>%{module}</strong>."
-    destroy:
-      success_flash: "Successfully removed task <strong>%{module}</strong> from project <strong>%{project}</strong>."
     samples:
       head_title: "%{project} | %{module} | Sample library"
     module_archive:
@@ -775,14 +758,6 @@ en:
       success_flash: "Successfully removed tag <strong>%{tag}</strong>."
       error_flash: "Could not remove tag <strong>%{tag}</strong>."
 
-  project_comments:
-    new:
-      head_title: "%{project} | Add comment"
-      title: "Add comment to project %{project}"
-      create: "Add comment"
-    create:
-      success_flash: "Successfully added comment to project <strong>%{project}</strong>."
-
   result_texts:
     new:
       head_title: "%{project} | %{module} | Add text result"
@@ -1064,14 +1039,6 @@ en:
     create:
       success_flash: "Successfully added comment to step <strong>%{step}</strong>."
 
-  result_comments:
-    new:
-      head_title: "%{project} | %{module} | Add comment to result"
-      title: "Add comment to result"
-      create: "Add comment"
-    create:
-      success_flash: "Successfully added comment to result."
-
   users:
     enums:
       status:
diff --git a/config/routes.rb b/config/routes.rb
index 517884abf..129526ec3 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -171,8 +171,8 @@ Rails.application.routes.draw do
 
   # Show action is a popup (JSON) for individual module in full-zoom canvas,
   # as well as "module info" page for single module (HTML)
-  resources :my_modules, path: '/modules', only: [:show, :update, :destroy] do
-    resources :my_module_tags, path: "/tags", only: [:index, :create, :update, :destroy]
+  resources :my_modules, path: '/modules', only: [:show, :update] do
+    resources :my_module_tags, path: "/tags", only: [:index, :create, :destroy]
     resources :user_my_modules, path: '/users',
               only: [:index, :create, :destroy]
     resources :my_module_comments,