[MIN] i18n
[MIN] Post-WIP changes

* Pythonification
* jQuery standarization
[NEW] Javascript keycodes

* Also renamed jquery-ui-multiselect path
[NEW] jQuery widget: wheel scroll blocker
[FIX] qTip binding for dynamic objects
[IMP] RoomSelector pictures style

* Added colorbox for full-size pictures
[IMP] RoomSelector hover and selected states style
[FIX] qTip binding for dynamic objects
[IMP] RoomSelector re-style completed

* Closes #1325
[MIN] Toolbars are now responsive
[MIN] THANKS file updated with room icon credit

* Changed also file extension to markdown
[IMP] Tons of SASS enhancements

* Moved rules out of Default.css
* Fixed rendering glitches: toolbars, i-buttons and inputs
* Minor style tweaks for RoomSelector
[MIN] Used keymap.js instead of hard-coded int
[IMP] RoomSelector: room pictures

* Added NoPhoto picture
* Picture extension is paramaterizable
[IMP] ScrollBlocker applied to dialog-pop up

* Widget capture wheel events in overflow-y intermediate elements
[IMP] Book a Room: Date range styled with toolbar

* Some refactorization as well
[MIN] Small SASS tweaks