Modification in detail view & edit view of page , File & E-Library

### Features Implemented ###
* Removed shelf and help button from the app bar which was previously disabled.

* Edit tags option placed bellow the editor in edit view

* Action button removed (since actions word not familiar for user) instead provided the action options in right corner of the details view page

* ```Editing <app name>```  provided for all the apps editing above the title edit. previously it was just ```Editing```

* Image thumbnail bug resolved. As for certain image thumbnails were not able to create due to there size issue, due to which itwas giving errors and throwing exceptions as "list index out of bound". Now provided proper conditin to select the image thumbnail

* Invisible text inside the edit panel in left pane(check while page edit in left side) now its visible

* Invisible text for "theme" and "add theme" option in Topic app, now ilinks are visible.

* Edit options: publish, delete, new page at the action panel in right side, along with that graph, ratings & In other languages option kpt at the right side panel of edit page.

* Untill the resource is not published will see the "Drafted" as a watermark text on right action panel.  since that is the exact place where user always intends to look for while doing any activities. 

* tabs defined in list view (page, file) have been shifted to the left panel now.from where user can get the easy idea and easy navigation to all the resources included in it.

Hence kept the left panel for showing the information regarding the resource or a page with various categories and right side panel is kept for Actions such as editing, delete, publish, create n so on ..

### What is to check: ###
* Check all page set up described as above. just check in page & file (detail & list) view
* also check by publishing the resource , when you publish the resource publish button will disabled also "Drafted" water mark will be removed. 
* check all tabs in page and file list view defined on left panel
* Previously for file app there is "Action" option on top app bar which is removed now and kept at the left panel of file list view,