Upgraded Twitter Bootstrap to 2.3.1
Added error popover for prereq errors in skillEditor
Bug fix for error popovers in skillEditor
Added missing view change (skillEditor)
Bugfix: skillEditor now properly clears listing when skill is deleted
Changed cursor style for some buttons in skillEditor
Added some visual cues to skillEditor
Merge branch 'skill_editor' of github.com:tsauvine/o4 into skill_editor

Conflicts:
	app/views/curriculums/courses/edit_prereqs.html.erb
Changed skill id in skillEditor to be an observable

This fixes prereqType calculations when new skills are created.
Added 'saving..' indicator to skillEditor
Merge branch 'master' into skill_editor

Conflicts:
	config/locales/courses.en.yml
	config/locales/fi.yml
Small improvement to skillEditor
Added an alert box for skill deletion errors (skillEditor)
Added error messages for skill save failures in skillEditor
Renamed _skill_editor.html.erb as _prereq_editor.html.erb
Refactored skillEditor and the associated views

The views are now split into multiple files, which should make their
reuse easier in a new skill edit view.
Moved skillEditor partials to curriculums/courses/skill_editor
Split skillEditor into multiple files using a simple module pattern
Fixed a few localized string references
Fixed one skillEditor string localization