updates in forum and recipes

[Natay]

Forum:

• removed html tags in search index content
• tags api added with /api/tags/<tag-name> endpoint. Returns list of post uids with that tag.
• fixed mobile views for new post forms ( Mobile display of New Post #574 )
• watched tags uses the model instead of regex.
• invalid answers/comments ( spam/deleted/quarantined ) not shown in post view
• show quarantined/deleted/spam posts in my posts tab.
• auto inlining of all css taken out ( pagespeeds is ~73% on mobile and 92% on desktop ) .

Recipes:

• drag and drop in recipes made to be like the reminders
• admins in recipes not given a data check.
• clean up cron script for recipes.