Closes #1074 : UI - Post deadline submissions

addition of a warning in the results/edit page for a post deadline
submission.
Checking in the controller instead of the view

Changing class 'error' with 'warning'
Another bug I forgot
Changing location of the method past_due_date? in model Grouping
Closes (PR) #726 : Error checking to the add section modal

 - add padding-bottom to the modal
 - add error checking to the modal
 - add remote requests to do not refresh the webpage
 - change location of select from _student_form to a partial
 - add rjs files to interact with the modal and the select sections
Merge pull request #1085 from GhiGt/issue-726

Closes #721 : Error checking to the add section modal.
Added new contributor
Add unit tests

(problem with commit)
Closes #1077: add link to directly go to submission

 - addition of a link and its translation
 - small indentation in _list_manage
 - sorry for 80 chars, I can't seem to do better...
Merge pull request #1089 from GhiGt/issue-1077

Closes #1077: add link to directly go to submission
Add RubyMine folder to .gitignore

 - .idea
add teardown with destroy_repos to do not have the error of filenames
Merge pull request #1076 from GhiGt/issue-1074

Closes #1074 : UI - Post deadline submissions
Merge pull request #1091 from GhiGt/rubymine

Add RubyMine folder to .gitignore
Merge pull request #1090 from benjaminvialle/NewContributor

Added new contributor
Update README.rst and markus-contributors.txt with students from UCOSP Winter 2013
Merge pull request #1093 from danielstjules/ucosp-contributors

Update README.rst and markus-contributors.txt with students from UCOSP Winter 2013
Merge branch 'master' of github.com:benjaminvialle/Markus into machinist2