Style extend()

  - fixes inline comments after extended selectors
Adding better support for .class and #id allowed chars.
Merge branch 'master' of github.com:snorripall/LESS-sublime into snorripall-master
Add test for #43
Merge branch 'master' of github.com:radium-v/LESS-sublime into radium-v-master
Move extend() to pseudo-class.less scope, closes #41