Refactored the customize dialog UI. 
Refactored the customize dialog UI. 

Original patch by dudley@chromium.org (http://codereview.chromium.org/2861069)

BUG=49704

Review URL: http://codereview.chromium.org/3019014

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@53263 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser