Remote access and other minor fixes

Created by: marcus-oscarsson

Hi,

• Made sure that lims and session information is treated when remote access operator / observer changes.
• Handling centringAccepted signal in a uniform way, between UI and workflow

I would also like to improve the login routine a bit it seems unnecessarily complicated at the moment. Let me know if you have any idea or thoughts on that !?

I did some minor fixes to the error icons, mostly placement, let me know what you think.

Cheers, Marcus