If a user searched after cancelling the search the first time,
the first search would still continue.
Assign the search task to navigation view and automatically cancel
it and dismiss the searchbar when the user switches to a different
tab.
Also add a ProgressView to show which source is being parsed.
Signed-off-by: kingbri <bdashore3@gmail.com>
These sources will be converted to be more flexible with JavaScript
in the future.
The source catalog is populated by adding a source list in settings
then installing a source from the catalog.
Sources can be enabled or disabled when using Ferrite.
Signed-off-by: kingbri <bdashore3@gmail.com>
