layout improvements
basic integration with ace code editor, syntaxt highlighting to be done
syntaxt highlight for ace
possibility to select lexer for active editor
syntax coloring while editing single files
params fix, better looking button for folder form
update footer
add prograils.com link to footer
Merge branch 'ace_editor' into develop

Conflicts:
	app/views/layouts/application.html.haml
simple comments for scraps, wip
fixing guard with rspec
better look of comments
add config.eager_load to environments
Merge branch 'develop' into comments
fixing single file tests after introducing ace editor