git: sort and add extras to .gitignore
git: sort and add extras to .gitignore

Review URL: http://codereview.chromium.org/144021

git-svn-id: http://src.chromium.org/svn/trunk/src@18991 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 90beeab91ca45423a600fc0b2201a7f49cd7f5bd
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser