implemented Conferences list controller
Merge branch 'master' into andrey
added URL helper to build base URLs
cancel stupid automatic IDEA modification
some draft implementation of the conferences list
conference controller non-authorized methods draft
Merge branch 'andrey'
Merge pull request #36 from asobolev/master

Conference controller: non-authorized methods

LGTM
conference controller draft done
Merge branch 'andrey'
Merge pull request #37 from stoewer/master

FigureService: implement methods and tests
Merge pull request #38 from asobolev/master

Conference controller with all methods (tests are coming)

LGTM
CSS: basic style definitions in less
UI: main template that uses some models and the less styles
UI: draft for submission page based on template.scala.html
Application: simple end point for the submission site