Merge pull request #54 from yotammanor/newmodel

Add Zinnia blog integration, basic beta version.
yotam: Add basic django-taggit feature. Reorganize installed_apps in settings.py
yotam: minor change to vagrantfile - make loaddata more verbose
yotam: create kikartags app as inherited taggit models, first steps toward integration with website
yotam: create management command to convert old tags to new tags. add unicode slugify solution
yotam: substitute all tags with kikartags in core.views
yotam: remove redundant add_tag function from core.views and core.urls
yotam: rename kikartags models to usable names, rename (through 'as') facebook_feeds.Tag to OldTag. Ensure maintained usability of features through the change.
yotam: rename old_homepage to hot-topics.
yotam: Change tag page title to an indicative title.
yotam: Change some of facebook_feeds.models' __unicode__ function
yotam: Add TagSynonyms to models and existing views.
yotam: created a filter to always treat tag as the proper synonym in templates, used in facebook_status.html and generic-template.html
yotam: big-brother kikar tags - each tagged_item is associated with datetime of tagging and tagged_by=user (set user through method tags.user_aware_add(user, *tags)
yotam: added review-tags view, and basic template