prevent enter from releasing grades
Made code more readable
Merge pull request #1411 from davidrd/issue-1398

Closes #1398: Pressing the Enter/Return key while a grade box is selected attempts to release marks.
Initial Fix for issue-1414
Merge pull request #1415 from beepted/issue-1412

Closes #1412: Unable to change Assignment when in Assignment>Groups or Assignment>Graders Page
Added libv8 to Gemfile
Merge pull request #1416 from benjaminvialle/libv8

Added libv8 to Gemfile
Starting gitbackend code
Mispelling correction
Correcting warning messages to correct functions
Get_latestest_revision working, get revision working.
Continuing test to make a test driven development
 Problem found: there is no map btw fs transaction and git and export content
Merging
Merge branch 'gitbackend' of github.com:tiagochst/Markus into gitbackend

Conflicts:
	lib/repo/git_repository.rb
	lib/repo/test/git_repository_test.rb