Update projects, comments and installations

- Added edit link to the projects list
- Start by displaying 50 entries in projects lists
- Parsed html in comments
- Added the 'Disctontinued' state to projects
- Added filters on projects table
- Added the branch field in the installations list
The convention is to put vendor (external) javascripts and stylesheets is vendor/assets, whereas app/assets is for application code only. Could you move all of the dataTables javascripts & stylesheets to vendor to comply with this convention?