Widget Add Preview

Preview the widget before adding

Signed-off-by: Steven Gray <steve@stevenjamesgray.com>
Merge branch 'firebase' of https://github.com/sjg/SchoolDashboard

Signed-off-by: Steven Gray <steve@stevenjamesgray.com>

Conflicts:
	common_assets/add.js
Merge branch 'firebase' of https://github.com/sjg/SchoolDashboard

Signed-off-by: Steven Gray <steve@stevenjamesgray.com>

Conflicts:
	common_assets/add.js