fixing duplicated projects in recommendations [fix #58038026]
added ie9 detection to server side function detect_old_browsers. removed JS validation to simplify code and as it was too fragile [fix #58427034]
moved update_info action to update and split create into create+edit in Projects::BackersController. This brings this controller closer to standart REST actions and fix the problem of reloading the review back form or changing language (because it was inside a post) [fix #57320436]
Merge branch 'master' of github.com:catarse/catarse into fixing_bugs
Merge pull request #370 from diogob/fixing_bugs

Fixing bugs