- currently refactoring projectBrowser: still work in progress
 * renames : projectBrowser2 -> projectBrowser, new project browser -> projectBrowser2
 * deleted unused projectBrowser and projectBrowser3
 * thumbnails are now fetched and displayed for browser store as well , thus fixes #93
 * zip export of browser store is functionnal in the new project browser : closes #121
(not visible for now, but can be set by "requiring" projectBrowser2 in the projectManager.coffee file)
 * various (in progress) UI improvements for the project browser (see above to enable)

- updated backbone modelbinder and jquery slimscroll libs
- google plus community icon now loaded locally