fix(templates): Open manage templates from composer window

- Fixes #1433
- Make Action.openPreferences global

src/browser/system-tray-manager.es6

@@ -81,7 +81,7 @@ class SystemTrayManager {
     if (this._platform !== 'darwin') {
       this._application.emit('application:show-main-window');
     }
-  }
+  };
 
   setTrayCount(iconPath, unreadString) {
     if (!this._tray) return;

src/flux/actions.coffee

@@ -126,7 +126,7 @@ class Actions
   @longPollOffline: ActionScopeWorkWindow
   @willMakeAPIRequest: ActionScopeWorkWindow
   @didMakeAPIRequest: ActionScopeWorkWindow
-  
+
   ###
   Public: Retry the initial sync
 
@@ -137,16 +137,16 @@ class Actions
   ###
   Public: Open the preferences view.
 
-  *Scope: Window*
+  *Scope: Global*
   ###
-  @openPreferences: ActionScopeWindow
+  @openPreferences: ActionScopeGlobal
 
   ###
   Public: Switch to the preferences tab with the specific name
 
-  *Scope: Window*
+  *Scope: Global*
   ###
-  @switchPreferencesTab: ActionScopeWindow
+  @switchPreferencesTab: ActionScopeGlobal
 
   ###
   Public: Clear the developer console for the current window.