Added comment system for projects and installations
Added style to comments
Comments will be now added without refreshing the page
Added comments on servers
Code improved according to suggestions. First tests for comments.
Fixed indentation
- Added more tests
- Added delete on comments
- Fixed indentation
Reject nils. tidy up a bit, to be more clear
Fixed indentation
Used order method for ordering the comments
Merge branch 'add_comments' into develop
Added new fields for projects and servers
Annotated models
Merge branch 'new_fields' into develop
Annotated models
Minor changes regarding installations
	Improved code in installation model