Rename get_response -> build_response

It's more descriptive of what the method actually does
and it avoids confusion with the HTTP GET verb.
Remove unused is_json argument
Extract building of Fever response
Extract favicons method
Extract items and total_items methods
Extract links, unread_item_ids and saved_item_ids
Sort helper methods in order of appearance in initialize
Extract method process_params
FetchNewStories#new_stories should stop scanning when story id is matched instead of url
Changes Story uniqueness validations based on entry_id and id instead of permalink and id
Use pessimize on Gemfile to lock down versions
Merge branch 'master' of github.com:swanson/stringer
Merge branch 'pr/252'
Mark all items read when the fever group_id is 0
Merge pull request #256 from jmazzi/bugfix/fever_group_0

Mark all items read when the fever group_id is 0
Handle OPML files with no :title tag, closes #255
Merge branch 'master' of github.com:swanson/stringer
move racksh out of dev group
Sets 30sec connection timeout for feed parsing
Updates feedzirra with itunes rss fixes