gui: Sparc Analysis tab added and MergeSlider is now hidden by default
Merge branch 'master' of delmic-server.local:odemis
spectrometer: update metadata when the spectrograph moves

fix binning and resolution changes as well
Merge branch 'master' of vpn.delmic.com:odemis
gui: The SEM zoom tool toggl the selection mode, for now.
spectrapro: put basic polynomial based on spec values

the formula and data come from http://www.roperscientific.de/gratingcalcmaster.html
adapted to Python and standard units
Merge branch 'master' of vpn.delmic.com:odemis