topic filters are added and deleted in the ui
preliminary entry filtering by topic
route is /:pagina/entries?t=34,65,etc ... query params not exactly working yet
one query param left - will not remove
single topic filter now disappears when it needs to
full topic filtering functionality (excepting pagination)
random style change
...in the midst of entry_count + topic_filter... hovno
topic filtering finally functional
Merge branch 'topic_filters'

Topic filtering is complete