Applications: Implement route to show a context

[juliusknorr]

Next steps:

• merge feat: hold multiple tables/views in global store #843
• Talk to @blizzz to rebase Contexts API #861 on top of latest feat/contexts
• Rebase Contexts in left navigation sidebar, edit and create modal #844 on top of latest enh/noid/contexts-api (Contexts API #861)
• Continue implementing in Contexts in left navigation sidebar, edit and create modal #844
  • Extend the vue route for /context to have an id parameter /context/{id}
  • Use backend API to fetch the nodes for the provided context id and show its tables/views

[blizzz]

Currently, by #844, the route is the page index with an anchor for the application and its id.

For the navigation in #904, I create the link accordingly via

tables/lib/Listener/BeforeTemplateRenderedListener.php

Lines 76 to 77 in 84622c6

	$contextUrl = $this->urlGenerator->linkToRoute('tables.page.index');
	$contextUrl .= sprintf('#/application/%d', $context->getId());