Merge pull request #42 from yotammanor/newmodel

yotam: add feedparser to requirements/base.txt
changed the css for the navbar so it looks normal
removed some commented out text that i put in by mistake
made a few more minor changes to the design to make it look slightly more presentable
yotam: fix a bug in set_is_comment logic
yotam: fix bug in default filter_by_date parameters - convert from constants to a function.
yotam: fetchfeedstatuses improvment - add "--force-update" option, extra minor changes.
Merge branch 'newmodel' of https://github.com/hasadna/kikar-hamedina into newmodel
Merge branch 'newmodel' of https://github.com/elie222/kikar-hamedina into elie222-newmodel
yotam: minor fix to navbar logo css