gui: Added bar plotting to plot canvas
gui: plot canvas bug fixes and focus line additions, including label
semcomedi: update comments
gui: tweaks, fixes and updates to Plotcanvas
Merge branch 'master' of delmic-server.local:odemis
semcomedi: make the write slightly faster

move the wait for the device end to the Writer.wait(). This means that in normal
cases, the writer doesn't so any sleep, which makes it a bit faster.
Merge branch 'master' of vpn.delmic.com:odemis