Merge pull request #402 from isuftin/master

Wiring up new rest paths to front end, refactoring, code cleanup
Updated map to handle incoming session (change base layer, set center, zoom to scale)
Changed the double serializer for GSON to use BigDecimal in its changeup of the double formatting. Using StringFormat was producing strings as doubles being passed back to the application
Fixed card clearing when choosing it from the submenu in the navbar
Clicking the eye icon in the navbar now toggles pinned-only view