sdlog2: fix lpos labels string, shorten messages with excessive length
sdlog2: Fix indendation to expose length better, cut string lengths for excessive strings
Fixed LPOS message in log, added ground flags field
More pedantic warnings
Fix of errors triggered by more pedantic compile options
Merge branch 'compile_pedantic' of https://github.com/PX4/Firmware into ekf_params
Merge branch 'lpos_logfix' of https://github.com/PX4/Firmware into ekf_params