Improved the ProjectSwitcher programatic api.
Calling `ProjectSwitcher.open` and `.close` now updates any associated trigger buttons' appearances ('active' state). Also, when calling `.open` when the switcher is already open, the sidebar does a shake animation to grab attention.
Added a connection message to the trace connector ui.
It slides out from under the gear button while in the 'connecting' state. Its message is slightly different depending on the page context (home page vs project page)