Mentions bumped to 1.1

I needed a timeout with my writing so I decided finally implement in-app billing to remove ads in the Mentions app. While in-app billing is pretty overwhelming once I read a bit from the documentation and googled around I found this helpful open source library that creates a helpful wrapper interface around the Google's API:
https://github.com/robotmedia/AndroidBillingLibrary

Thanks to Robot Media for creating and open sourcing it!

I also updated almost all libraries that are used in the project. On top of that I tweaked the UI visuals a bit and hopefully made it a bit more pleasing visually.