IN-308 - Update tab and tag styles
IN-417 - Update header to better match existing apps
IN-179 - Remove button styles so ideabox inherits the collab style
IN-179 - Remove gray box for comment input
IN-179 - Remove gray :hover background in list
IN-179 - Match ideabox title color to collab standard
IN-310 - Change the word 'vote' to 'like'
Merge pull request #6 from m3brown/style

Style updates