clean up
removes some legacy tables and refines the hashtag migrations.
added label to the comment permalink
added trending hashtags gadget to the dashboard
fixed bug in the query
trending hashtags are now calculated properly by the number of days passed via the url. By default it is within the last 24 hours.
removed hashtagable_count
hashtag body isn't being used
jazzed up the hashtags default layout a bit
new labels added
hashtags gadget for dashboard added
the value of the total records is now shown correctly