new cellapi
add logging
add try-finally-close sequenze for resources
enhance lookup
allow disabled cache
add unique prefix to logging TAG
disable all other backends
updated OpenCellID to new API format
Make non needed constructors private
Merge branch 'ov3rk1ll-master'
Merge branch 'emdete-cellapi'
Revert "disable all other backends"

This reverts commit bbd42507472859164962908a4c2f451e8837a0fd.