Karten auf CMB2 umstellen

[hansmorb]

Stellt die Karteneinstellungen vom Custom Format auf CMB2 um.

TODO:

• Migration für Filtergruppen bauen
• Mit Filtergruppen in CB-Map umbauen #1409 zusammenführen
• Auf neuen Master rebasen

[codecov]

Codecov Report

Attention: Patch coverage is 69.10467% with 245 lines in your changes missing coverage. Please review.

Project coverage is 51.75%. Comparing base (7046204) to head (5284443).

Files	Patch %	Lines
src/Model/Map.php	0.00%	132 Missing ⚠️
src/Map/MapData.php	0.00%	49 Missing ⚠️
src/Wordpress/CustomPostType/Map.php	95.94%	22 Missing ⚠️
src/Plugin.php	5.55%	17 Missing ⚠️
src/Map/MapShortcode.php	0.00%	13 Missing ⚠️
src/Service/Upgrade.php	72.22%	10 Missing ⚠️
src/View/Map.php	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1413      +/-   ##
============================================
+ Coverage     48.82%   51.75%   +2.92%     
+ Complexity     2651     2542     -109     
============================================
  Files            96       95       -1     
  Lines         10545    10819     +274     
============================================
+ Hits           5149     5599     +450     
+ Misses         5396     5220     -176     

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