Make AbstractFlagEncoder methods protected: blockFords etc.

Remove unused code

access on private roads (graphhopper#1936)

* access on private roads; if enabled it'll be still avoided

* protected constructor

removed unused EncodedValueOld

Use new profiles section to configure LM&CH preparations (graphhopper…

…#1922)

No longer enable CH by default in GraphHopper class (graphhopper#1914)

Put back LMProfile getter

Add hint about disabling CH/LM when profile not found.

Adjust test of graphhopper#471

Fix step numbering in non-firefox browsers (graphhopper#1874)