Rework of re_emit_values
Created by: IvarsKarpics
PR is linked to the https://github.com/mxcube/mxcube/pull/402
Some fixes to run qt version of mxcube
- added re_emit_values method to the beamline to be called after loading the gui.
- use re_emit_values method just to re emit actual values. In the case of mxcube qt we would like to re emit values after the gui is loaded. So there should not be a logic in the re_emit_values method that checks if the value is changed. Gui needs these values.
- Fixed AbstractCollect