optimized database_selector loading records
dclick recall from time view
Merge branch 'release/v2.0.4' into develop

Conflicts:
	pychron/database/records/isotope_record.py
updated query view/toggling between browser views. #358
Merge branch 'release/v2.0.4' into develop

Conflicts:
	pychron/database/records/isotope_record.py
	pychron/envisage/browser/browser_mixin.py
	pychron/processing/tasks/browser/browser_task.py