recalc *ALL* data + ecotrackimprovement + ... > see below

unknown-tags.sh: fix error message. always call both functions and write to files (tags_info and tags_unknowntags)
update-gitignore.sh: change name
dataSync:
  calc mean temperature for all 4 sensors
  filter temp below threshold (cur=12°C)
datafilter:
  fix format bug where zeros where prepended to species col
  duplicate func make_rel_abs_path (in dataSync and dataFilter) to avoid import error due to circular dependency