Re-pin header on swipe
Use var
Merge reverted design
Move popups into header
Control module now only needs one context
Reset nav controls on page:ready
Fix nav styling
Added guard to make people think before adding a parameter.

Adding parameters has SEO and caching implications and we should think really carefully before doing so.
Better .h class
Enable for all iOS. Fewer header repins.
Enable for iPhone5 only.
No need for initial control reset.
Always pin header
Tidy up
Fix merge conflict
Merge branch 'master' into header-fixed
Put back swipe bootstrap
Update height earlier
Merge branch 'master' into header-fixed
Fix scroll reset bug