change selected_related to prefetch_related in Article.all_images
optimizing ArticleBox.ordered_articles query
optimizing ArticleFeed.items query
adding decorator opps.core.cache.cache_page
use opps cache page decorator
all urls used new opps decorator cache
Set is_mobile in request on _is_mobile definition
optimizing images admin
Merge branch 'stable/0.1.x' of github.com:opps/opps into stable/0.1.x
adding SearchModelAdmin in PostAdmin and AlbumAdmin
Revert "adding SearchModelAdmin in PostAdmin and AlbumAdmin"

This reverts commit d3f36d42e515c74d2135440ee2686ae37800039c.
adding channel_name to post and album index
changing channel to channel_long_slug in AlbumAdmin
adding haystackadmin
change select image on editor to default size
Removed unused imports
Create article clean slug check
If exist slug in other article type return raise
Fix bug channel with accent in urls
Merge branch 'opps/0.1.x' into opps/0.1.x_order