Improve few variable names
Restructure requirejs-angular modules

Initial idea was to use single angular module and mix controllers,
filters and directives into it using requirejs.
Problem: requirejs is not flexible, but angular is designed to use dependency
injection inside unit tests. So you can easily play with injector. With requirejs
you need to modify central configuration.
Solutin: use angular modules
Merge branch 'master' of github.com:vkevroletin/text-board