Add "about" modal, prepare hooks, VERSION system for addons

Also the addon generator is fixed so it properly creates VERSION
file for new addons.

app/assets/javascripts/sitewide/about_modal.js

@@ -0,0 +1,9 @@
+(function() {
+  'use strict';
+
+  $(document).ready(function() {
+    $("[data-trigger='about-modal']").on('click', function() {
+      $('[data-role=about-modal]').modal('show');
+    });
+  });
+})();

app/helpers/addons_helper.rb

@@ -0,0 +1,8 @@
+module AddonsHelper
+  def list_all_addons
+    Rails::Engine
+      .subclasses
+      .select { |c| c.name.start_with?('Scinote') }
+      .map(&:parent)
+  end
+end

app/views/layouts/application.html.erb

@@ -45,6 +45,9 @@
       </div>
     </div>
 
+    <!-- About us modal -->
+    <%= render "shared/about_modal" %>
+
     <%= render "shared/navigation" %>
 
     <div id="notifications">

app/views/shared/_about_modal.html.erb

@@ -0,0 +1,28 @@
+<div class="modal" id="aboutModal" tabindex="-1" role="dialog" aria-labelledby="aboutModal" data-role="about-modal">
+  <div class="modal-dialog" role="document">
+    <div class="modal-content">
+      <div class="modal-header">
+        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+        <h4 class="modal-title"><%= t('about.modal_title') %></h4>
+      </div>
+      <div class="modal-body">
+        <strong><%= t('about.core_version') %></strong>
+        <br />
+        <%= Scinote::Application::VERSION %>
+        <br />
+        <br />
+        <div data-hook="about-modal-addon-versions">
+          <strong><%= t('about.addon_versions') %></strong>
+          <br />
+          <% list_all_addons.each do |addon| %>
+            <%= "#{addon.name}:" %>
+            <br />
+            <%= addon::VERSION %>
+            <br />
+            <br />
+          <% end %>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>

app/views/shared/_navigation.html.erb

@@ -234,6 +234,12 @@
             <li><%= link_to t('nav.help.contact'),
                               Constants::CONTACT_URL,
                               target: "_blank" %></li>
+            <li role="separator" class="divider"></li>
+            <li>
+              <%= link_to '#', data: { trigger: 'about-modal' } do %>
+                <%= t('nav.help.about') %>
+              <% end %>
+            </li>
           </ul>
         </li>
 

config/locales/en.yml

@@ -72,6 +72,7 @@ en:
       support: "Customer support"
       premium: "Premium"
       contact: "Contact us"
+      about: "About sciNote"
     activities:
       none: "No activities!"
     label:
@@ -87,6 +88,11 @@ en:
       info: "Info"
       account: "Account"
 
+  about:
+    modal_title: "About sciNote"
+    core_version: "sciNote core version"
+    addon_versions: "Addon versions"
+
   sidebar:
     title: "Navigation"
     no_module_group: "No workflow"

lib/generators/addon/addon_generator.rb

@@ -114,12 +114,16 @@ class AddonGenerator < Rails::Generators::NamedBase
     gsub_file(file_path, '${ADDON_NAME}', @addon_name)
 
     # lib/.../version.rb
+    dots = @modules.map { '/..' }.join
     create_file(
       "addons/#{@addon_name}/lib/" \
       "#{@folders_path}/version.rb"
     ) do
       embed_into_modules do
-        "VERSION = '0.0.1'.freeze\n"
+        "VERSION =\n" \
+        "  File.read(\n" \
+        "    \"\#{File.dirname(__FILE__)}#{dots}/../VERSION\"\n" \
+        "  ).strip.freeze\n"
       end
     end
 
@@ -182,6 +186,7 @@ class AddonGenerator < Rails::Generators::NamedBase
     gsub_file(file_path, '${FULL_UNDERSCORE_NAME}', @full_underscore_name)
     gsub_file(file_path, '${NAME}', name)
     gsub_file(file_path, '${FOLDERS_PATH}', @folders_path)
+    create_file("addons/#{@addon_name}/VERSION") { '0.0.1' }
 
     # Rakefile
     file_path = "addons/#{@addon_name}/Rakefile"