Fixed bug with distance in getExistingSession
Added function for formatting undo button text
Implemented undo
Implemented filtering by distance
Merge pull request #114 from johnttan/undo#74

Undo#74
Implemented filtering by distance
Fixed conflict
fixed duplicate line
Merge pull request #115 from johnttan/filterdist#92

Implemented filtering by distance
Implemented server-side caching of locations
Implemented limit filter
only caching data now, not session
Added refresh on 3 days or more old caches
Merge pull request #116 from johnttan/memoizeloc#94

Implemented server-side caching of locations
Merge pull request #118 from johnttan/limitrecs#117

Implemented limit filter
Lint
Merge pull request #120 from vboginskey/ui-improvements

Lint
fixed nested uiview
Gets 40 restaurants now
Updated PR, removed .go redudancy.