Merge pull request #58 from yotammanor/newmodel

kikartags and zinnia blog
Add logos to tags, basic changes: added to model, and sample add to template, serves locally only.
yotam: add is_suggestion field to kikartags.Tag, minor change in tag.html design.
yotam: Set fields with default=True also to Blank=True at Facebook_feeds and kikartags
yotam: reorganize migrations and provisions for kikartags
Merge branch 'newmodel' of https://github.com/hasadna/kikar-hamedina into newmodel
Merge branch 'newmodel' of https://github.com/yotammanor/kikar-hamedina into newmodel

Conflicts:
	kikar_hamedina/core/templates/core/tag.html
	kikar_hamedina/kikartags/models.py