Merge pull request #18 from sebastianamaro/adminPreChargedCategories

Admin pre charged categories
friends shown to pick
giladas
invitations sent and received for friends
invitations from friends can now be accepted an rejected
Merge pull request #19 from sebastianamaro/chooseFriends

Choose friends
error in show round results and show game results fixed
show round results called from play round (only when online game)
Merge pull request #20 from sebastianamaro/refactorShowRoundResults

Refactor show round results
Categories implementation on server
Initial category implementation on client and autocomplete textbox
Test pending,  Bubble and persist on server pending
Image on click working. AutoComplete does not :(
stared categories implemented on server
star and report category implemented both server and client
redirection from previous activities
getCategories from server and send them back
finished listview
Merge pull request #21 from sebastianamaro/freeCategories

Free categories
Fixed selected categories on controlled