jQuery and jUniv are not implemented

[DarkSide666]

• Can't find in code where we actually use jQuery->_include and load jquery.min.js. In demos we have hard-coded <script src="https://code.jquery.com/jquery-3.1.1.js"></script>
• Same story with jUniv - that's why $view->js()->univ()->reaload() doesn't work

[romaninsh]

This is currently hard-coded: https://github.com/atk4/ui/blob/develop/template/semantic-ui/html.jade#L7

Technically i think it's responsibility of the App class to add additional includes, because this is framework-dependent action.

[DarkSide666]

see also #50. These are related.

[romaninsh]

#50 and #51 overlap with this ticket, so I'll close this down.