OTTS Pre-Production Service Update 3

Changelog:

• (Vast Majority Menus) A help button has been added with critical information;
• (Planning) Random selection of semigroups when generating;
• (Offline Login) A loading screen has been added;
• (Planning Menu) The generation number combo now includes the date of the generation;
• (Planning Menu) The plan can now be exported in html, xlsx and pdf format;
• (App) The application now has an icon and a title;
• (Teacher Priority Modules) These are now separated by group type so in this current release there are different for bachelor and masters;
• (All menus) Prior to this version when there was no value it was displayed "0" especially for priorities now it shows "N/A";
• (All menus) Autorefresh of data was made for all fields that are combo boxes.