[WIP] Top bar

Created by: meguiraun

Issue #445 (closed)

• Redesign of the beamline row
• Basic cryo component (allocating space)
• Dynamically create actuator component based on the objects present in state.beamline.actuators

WIP because:

• you may not like the design at all: I keep both open and close buttons, although I disable one at a time instead of hiding, so no big visual changes
• my git history can (and will) be improved

The following images are generated only removing the beamstop and safety_shutter xml files, no client code was changed, just refresh!