[#111] Optimizing login screen to x-large format and large format
[#111] Upgrading 'session values' screen for x-large format
[#111] Adapting 'choose activity flow' screen for x-large format
[#111] Upgrading 'use prepared questions' screen for x-large format with 'preview IQSet' button
[#111] I was wrong, 'preview IQSet' button was using large layout instead of x-large. This is fixed now
[#111] Removing a crash in General Activity because of x-large format.
Merge pull request #113 from chrqls/dev

[#111] Upgrading x-large format. See commits for more details