Revamped featured app admin search suggestions

This moves it to mkt.zadmin since it is the only thing using it and
returns JSON specific to the admin and removes the old web search
suggestions.
cleanup
place Euro symbol properly (bug 865358)
require URI in redirect URI field (bug 866175)
Remove trailing commas
Merge pull request #855 from muffinresearch/remove-trailing-commas

Remove trailing comma typos
stop trunion 500'ing hopefully
revert my earlier change
fix long line
Removed 'search-api-es' waffle flag (bug 875012)
remove unnecessary import
remove abuse.styl (bug 880767)
remove unnecessary import
Update prod.txt

Bump redis.
reorder imports
fix addon-orphaned reviews trying to be displayed on user profile page (bug 881034)
move imports around
add an install api, seperate from the receipt api (bug 886568)
make url match docs
Added Polish analyzer.

Note: Requires the elasticsearch plugin found here:
https://github.com/elasticsearch/elasticsearch-analysis-stempel