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Add site theme support
Merge pull request #1488 from loomio/themes

Site Themes
change session store
fix travis
confused
tld length
tld length
uh
replace routes
fix upadte on groups with a subdomain
add description field to group admin panel
add js support to themes
Merge pull request #1490 from loomio/themes-js

add js support to themes
add theme javascript to pages layout
remove failing empty specs
remove caching and fix mimetype on themescontroller
add caching back to themescontroller
fix cukes
style hooks for theming