GitLab

Main changes:
 - Added a global variable 'selected'
 - Added a loading state while javascript execute populate()
 - Added cookies support to save last table state
 - Added a table expand feature
 - Fixed a bug when saving the collumns
 - Fixed the program identation
 - Adaptation of 'create_list' function to the new columns menu
 - Added menu functions to show and hide it
 - Fixed identation
Signed-off-by: Vinicius Ruoso <vkr07@c3sl.ufpr.br>