!!!REWRITE HISTORY, SAVE SPACE FOR ECOTRACK, SEE FULL COMMIT MSG FOR DETAILS!!!

> only full raw data in ecotrack/all/01-raw
> all other ecotrack/{I,II,III} only link to this
-> should speed up git and reduce total size and redundancy

> getDates.sh:
	add earliest latest date for all units
	write to file
	add to dataSync

-------------------------------
All the squashed old commits below:
-------------------------------

commit baafb4ad (HEAD -> dev, tag: ecotrack-data, tag: ecolux-data, origin/dev, master)
Author: am0ebe <am0ebe@gmx.de>
Date:   Thu Mar 18 17:57:32 2021 +0100

    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

commit 84cafbb7
Author: am0ebe <am0ebe@gmx.de>
Date:   Wed Mar 17 18:00:05 2021 +0100

    fix config. filter: infer proj from filename. add ectrack data I,II,III. start temp: calc mean for

commit 68f4680e
Author: am0ebe <am0ebe@gmx.de>
Date:   Tue Mar 16 15:28:27 2021 +0100

    continue conf.json and datasync/filter implementation. filter: derive proj for blox from header

commit b419a53b
Author: am0ebe <am0ebe@gmx.de>
Date:   Mon Mar 15 14:48:05 2021 +0100

    ignore .csv, add ecotrack data, parse conf.json > add blox and project configuration.

commit 99322855
Author: am0ebe <am0ebe@gmx.de>
Date:   Thu Mar 11 18:29:56 2021 +0100

    recalc *ALL*. adjust unknowntags script > create tagInfo and unknown-tags automatically from datasync

commit a43a6e59
Author: am0ebe <am0ebe@gmx.de>
Date:   Thu Mar 11 16:01:30 2021 +0100

    put blox-configuration into file. unknown-tags.sh takes dir as arg and is beong called properly from dataSync

commit 75f647a9
Author: am0ebe <am0ebe@gmx.de>
Date:   Thu Mar 11 14:22:05 2021 +0100

    add ecotrack data. rename data dirs

commit ac955cb8
Author: am0ebe <am0ebe@gmx.de>
Date:   Thu Mar 11 13:35:30 2021 +0100

    add ecotrack support | fix time bug > see below

    fix daylightsavingtimes bug:
    > set timedelta to hours not days

    ecotrack support:
    > 4 sensors per unit > merge on unit and habitat and time!
    > sensors log time once every 5 minutes. find closes trackdetection

    > calcHabitat() to determine what habitat depending on x,y and PROJ var
    > initTempData() get temp data and store in list of list of tuples
    -> tempData[unit][habitat] returns (time,temp)
    > mergeTemp