Add .gitattributes to enhance git diff

With this git diff show function name
instead of class name for php files

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@fiducial.net>
If no group label is provided, use group name. Fix #281
Merge branch 'master' of https://github.com/ajaxplorer/ajaxplorer-core
Make custom sort function to make sure users are sorted (fix #279)
Add the MAX_RESULT parameter that allow you to choose how many results you want to display (at most) for a search
Plugin documentation updated.
Merge remote-tracking branch 'origin/master'
Fix CLIENT_SESSION_TIMEOUT legend (infinite value is -1, not 0). Force value to -1 when session is AjaXplorer_Shared, should fix #272
Merge branch 'master' of https://github.com/ajaxplorer/ajaxplorer-core
Fix code formatting
Code style
Merge branch 'master' of https://github.com/ajaxplorer/ajaxplorer-core
Merge pull request #286 from echampet/gitattributes

Add .gitattributes to enhance git diff