Merged branch 'issue-87'

The problem was in precedence of ternary operator and + sign.

Merge branch 'fix-nan'

Merge branch 'super-improvements'

Remove parseInt(.., 10)
Move $.post(..., 'json') to $.postJSON

+ Move ajax requests to promises base
+ Define constants for API URLs
+ Handle errors based on network connections problems as well as server-side logic errors
+ Generalize code so it can be used by modules & submodules simultaneously
+ Update name of module after 1 second, not waiting for focus out event

Merge branch 'issue-89'