Resolves#817
- Adds relevant action buttons to each Workflow detail tab header
- Adds "Delete" action menu item to crawls in Crawls tab
- Prevent automatically switching to "Watch" tab after running crawl from detail page
- Removes "Stop" confirmation prompt and only shows "Cancel" confirmation prompt if there are one or more pages crawled
- Replaces "Cancel" confirmation prompt with web component dialog (partially addresses Switch to in-page dialogue boxes #619)
- Fixes hash routing to fix going back with browser back button