GCI: 5231922162696192

I've added the catalan translation and improved little things from the others.

P.S.: My machine has started to fail compiling the source for debugging, it gets stacked on preDexDebug, I think it's caused by insufficient RAM (maybe it's time to buy a new computer...). However, I've tried making the project and it build perfectlly. I'm comenting this fact because it should be tried to build the app for debugging before doing the merge.

I hope you've understood the problem.

Gabriel