[FTS] UI: stats: query count stat when searching from list page goes up twice

Spawned off / copy-pasted this sub-issue off from MB-21783...

On the Search UI sub-issue with a query count going up twice per search – confirmed, with some more details...

I tried it on just a single node, and if I start the search from the "list page" (http://localhost:9000/ui/index.html#/fts_list), the query count (incorrectly) goes up twice.

But, when I start the search from the "search results page" (http://localhost:9000/ui/index.html#/fts_search/myFTSIndex/_search), the query count correctly goes up just once.

My guess is I think this particular sub-issue a client-side UI / JS / angularJS thing.