New change_profile page
REST calls for different user and group functions
Profile Page with Server Interaction

- Adding Friends
- Showing Groups
- Showing Friends
add graph page with data from track.json
Measurements based on GeoJSON from Server

Including different colors for different property values
Heatmap with Track from Server
Deleting Contributors and Data Access Tabs
New images and new logo in headers
Route List and GET for Route.php
Changes based on new JSON String

+ Deleting unused files
Route also as Linestring + Timestamp formatting
Add geojsontools.js
Auth also for POST
Profile with friends/groups and individual page
Merge branch 'dev'