FIX issue 996.
Ruby 1.9.3 no longer had .id method for the Object class. Changed calls for
repository files and directories (which inherited it from id) to use
object_id instead because it is still available in 1.9.3
Fix for issue 617: Display a modal warning users about functionality in IE, and suggesting switching browsers. Only shown on first visit of any session at the login page
Merge pull request #978 from danielstjules/issue-617

Fix for issue 617: Display a modal warning users about functionality in IE, and suggesting switching browsers. Only shown on first visit of any session at the login page.
Closes #617
Merge pull request #976 from umsmit32/issue-966

Closes #966 Files added on submission page are not displayed.

When you add a file as a student on the submission page, the file doesn't show up in the list. On other pages it says you have uploaded a file but you can't see it.

This issue only occurs in ruby version 1.9.3 and not 1.8.7.
Merge branch 'master' of github.com:MarkUsProject/Markus into machinist2