Style simplifications and small changes.
*.less files of CleverStyle theme converted into *.scss.

System version 0.318
modules:
Blogs 0.056
Comments 0.015
Cron 0.007
Feedback 0.005
HybridAuth 2.1.1-cs25
OAuth2 0.019
Photo_gallery 0.007
Plupload 1.5.7-cs8
Static_pages 0.031
plugins:
Admin_default_theme 0.004
Fotorama 4.2.1-cs2
SimpleImage 2.3-cs1
TinyMCE 4.0.3-cs2