Activities Table Search reset after changing activity

[marc-vdm]

When user searches a database And then changes an activity -for example adding an exchange to an activity- The search is reset.

I'm assuming the table is reset on an activity change -which makes sense as an activity/product name could have changed-, though it would be nice if we could keep the search active.

[Joeytje50]

Note: Search should remain active for the current database; switching database should reset search, and switching back to the previous database should reinstate the search string

[Joeytje50]

Additional to this issue, there also seems to be a similar issue to #797 occurring when pressing return on the search box, meaning there is some other resizing logic being applied when pressing return. I think it would make sense to fix that alongside this search issue.