Resolve "Support for icat "definition" field"

Closes #2792

See merge request !3758

Merge branch '2101-p-t-question-how-to-get-a-list-of-all-existing-motors-in-beamline-config-not-session' into 'master'

Resolve "P.T. question: how to get a list of all existing motors in beamline config (not session) ?"

Closes #2101 and #2779

See merge request !2912

Resolve "add objects and examples to the demo session"

Closes #2806

See merge request !3775

Flint: Create a custom time curve plot

See merge request !3777

Resolve "add doc for the 'ramp_from_pv' option of the loop"

Closes #2805

See merge request !3779

Flint: Refactor the tests which was using hardcoded scan_info

Closes #2771

See merge request !3769

Add kwargs to log methods

Closes #2808

See merge request !3776

Resolve "Redis subscriber does not get new scan events on existing parents"

Closes #2798

See merge request !3770