gui: value reset bug fix
gui: thread bug fix
gui: reset bug fix
Merge branch 'master' of delmic-server.local:odemis
gui: limit the range of the zoom (in and out)

add a range to the mpp to specify the minimum and maximum zoom level (mpp)

use this range in the DblMicroscopeCanvas widget to limit the zooming.

Avoid a crash when zooming so much into an image that 1x1 px become a huge picture

Fix estimateAcquisitionTime() on SEM, which was not using the .value of the VA
Merge branch 'master' of vpn.delmic.com:odemis