Work on major bug EXT-3985 ([BSI] Landmarks created in Viewer 2.0 show up with 1@ in Viewer 1.23.x)

-- Implemented storage to save favorite landmarks order in local file.
-- Previously implemented solution to store sort index in Landmark's name replaced with using the storage.
    For now all landmarks are shown as is (with sort LM prefix if it exists).
-- Some deprecated methods are marked to be removed later
-- Reverted fixes for: EXT-4306, EXT-1237, EXT-1615 as not necessary, these bugs should be verified again.

--HG--
branch : product-engine