Fix parsing `\'` escapes in WebUI response scripts.

Closes #17.
Add functionality for singning up, off for exam.
Add build system for votrfront/static.
Add votrfront login.
Encode structure keys as strings for client side usage.
Specify allowed login types directly in server settings.
Implement cosignpassword login type.
Refactor login and separate destination from params.
Fix cosignproxy logout.
Add CSRF tokens to RPC calls.
Add React based login form.
Allow using non-minified jQuery and React with "Votr.setDebug(true)".
Add router for query string actions.
Add confim box support.

enable to emulate clicking on buttons when a confirm box is showed
Add support for adding and deleting enrollment list.
Add lodash dependency.

Additionally, stop listing *.min.js library dependencies in all scripts except
for main.js. Since main.js loads them first, everyone else can simply assume
they're already present.
Remove Votr.merge(), and use buildUrl() implicitly in Link and navigate().
Add an initial version of the main menu.
Add ajax.js.
Add ZapisnyListSelector, with proof-of-concept MojeSkuskyPage.