test stuff
added to for if ph exists for doh calculations
back to empty sting instead of number
Merge branch 'beta' of https://github.com/C3-CSIRO/Meltdown into beta

Conflicts:
	meltdown.py
changed column names and added decriptionfile
fixed error dialogs
changed layout to work with up to 12 groupers
meltdown now reads in tab delimited text files
much nicer way to do the multiple gpp
ready to merge to beta
Merge remote-tracking branch 'origin/beta' into beta

Conflicts:
	data/Content_map.xlsx
removed whats not imported
small logic msitake
further fixed the logic mistake
added more colours
maybe its not fixed
added ph back to the labels
now its fixed
fixed axis scaling
added csvtotxt script and converted some datafilee