Added directive for simple sorting/filtering on tables

Signed-off-by: Jakub Koudelka <koudelka.j@gmail.com>
Added sorting/filtering to images table

Signed-off-by: Jakub Koudelka <koudelka.j@gmail.com>
Merge branch 'bootstrap3' of github.com:ponycloud/rainbow into bootstrap3
Added directive for actions on mutiple items in tables

Signed-off-by: Jakub Koudelka <koudelka.j@gmail.com>