include CHANGELOG on MANIFEST
template tags added rss functions
Merge pull request #117 from DiegoYungh/rss_tags

template tags added rss functions
Added default value to OPPS_RSS_LINK_TEMPLATE
Changed name to get_rss_link and small pep fixes
Set opps cache settings
Remove core cache package
Create cache key generate
use opps cache on views generic, query set
Merge branch 'master' of github.com:opps/opps

Conflicts:
	opps/core/__init__.py
Remove johnny cache
Fix html crop_example widget image
Fix image problem
Update CHANGELOG
Added field include_in_main_rss to Channel model
Fix filters in RSS fedd
Added migration to Channel.include_in_main_rss
Y U do not follow the PEP8?
Main RSS should show only published channels
added 'include in main rss' in channel admin