first cut at wiring posts-search
fixed routing issue
fixing merge conflicts
use setfilterparams to pass to a collection
removed unnecessary routing
Search posts by keyword
Merge branch 'master' into posts-search
Add 'replaceExisting' option to posts.setFilterParams()

Allow us to extend current filters, not replace entirely. This is useful
for search
Merge pull request #174 from ushahidi/posts-search

first cut at wiring posts-search