Add support for mobile devices.
Add and improve further mobile views.
Add filter dialog in shots#index on separate page.

Change mobile layout: Define separate pages in each view.
Add jquery mobile gem.
Switch to jquery mobile kit and setup a few pages.
Remove old  jqtouch package (replaced by jquery_mobile).
Fix "back" links in header line.

Replace table by list view in shots list (mobile).
Merge branch 'mobile' into development

Conflicts:
	Gemfile.lock
Update changelog.