Adds styles for logo box at top of every screen
Merge branch 'master' of github.com:yast/yast-theme

Conflicts:
	SLE/wizard/installation.qss
Fixes many minor issues

  * Fixes bar graph colors
  * Fixes tab bar base line color
  * Fixes tab bar expander button colors and indicators
  * Removes a few useless definitions
Remove unused styles
Merge pull request #36 from kwwii/master

Next to last qss style improvements