Add Xylon's website

+ Google activity
Add some G+ links and donate link
Update attrs.xml
Add Google listener
Added back Xylon logo & website + G+ links + clean up
Add G+ icon

But the drawable is needed, I can't add it myself.
Merge pull request #9 from AirOne70/jellybean

Add G+ link, Website link, Xylon logo
Merge branch 'jellybean' of https://github.com/UltimatumKang/android_packages_apps_Settings into hololight-staging