Added main part of link editor for courses
Some JS and CSS improvements
Fixed hardcoded URL's
Added ability to save coordinates of course's blocks
Updated Entity Framework version to 6.0.2. Commented QuestionGenerator initializer, because due to it, an error occurred.

WARNING! If you haven't data in your DB you should remove "return;" from Configuration.Seed().
Added support Themes in link editor
Icons improvements
Icons improvements
Merge branch 'dev' of https://github.com/AriettiS/Vschool into dev
Fixed some bugs with Theme/ThemeContent links
Added help for link editor
Entity Framework 6.0.2 update rollback
Added check for cycles in link editor's graph
Merge pull request #1 from AriettiS/dev

Link Editor