fixing demo errors
Merge branch 'master' of https://github.com/MGhanem/smartsoft-13

* 'master' of https://github.com/MGhanem/smartsoft-13:
  removed option to enter empty data in gamer and guest forms, added translations, removed error in subscription choosing view
  added if to check if category is not nil before adding it to a keyword
  I am too bored to name this commit correctly\n\nsorry guys :)