Rework Roomfinder

[tgymnich]

• Elastic Search: backend solr, elastic search (elk)
• Draggable/Zoomable Map
• Map to Lat/Lon => Google Map
• getMapMetric(m_id):

Returns UTM coordinates of a map plus rotation relative to the UTM grid.
(SW=southwest/lower left point, NE=northeast/upper right point)

Usage:
   getMapMetric(int map_id) =>[float SW_x, float SW_y, int SW_zone, float NE_x, float
NE_y, int NE_zone, float rotation]

Example:
   getMapMetric(12) =>   [690631.375, 5335887.5, 32, 691356.4375, 5336190.0, 32,
-21.271878999999998]

See TumCampusApp/#777

[kordianbruck]

FYI: api will be implemented on the server and be provided with the other functions for caching reasons.

[tgymnich]

no longer applicable due to app rewrite