[Feature] New search UI and improvements.

__Includes:__

1. The part of search.ts migrated to the new search form (search(), onSearchResults(), escapeSearchString() methods).
2. The search feature is improved and refactored.
3. Fixed tourslist form opening/closing.
4. Minor fixes.

__Code Review:__
http://mrccodereview.cloudapp.net/ui#review:id=1306