Upgrade depmgt version to 10-SNAPSHOT
SWF-2705 : Create pdf-js branch and update projects versions
Prepare template UIDocumentPreview.gtmpl
Limit preview for specfic content
Add function isWebContent for UIDocumentPreview.java
 preview from the activity stream is available for the following contents:
- pdf and office file
- media (audio, video, image)
- Webcontent
Rating and Votes informations are not displayed until someone votes on a content.
READER_GEN_03 Other file formats aren't supported by the new reader:

- the link View of the Activity actions bars isn't displayed
- the filename should redirect the user to the source file
Load comments to comment Area
Load comments to Comment Area - fix build fail
Add/Remove comment in Comment Area