Name already in use

The flatpak system uses up more memory than mintupdate should
require. This also allows us to have timeouts to limit how long
the worker has to perform certain operations.

- fetch updates and refresh are one-shot calls
- performing an update requires extra work:
  - we tell it which packages we wish to update
  - once it's ready, there's a wait to confirm if needed
  - finally, upon confirmation, the worker proceeds with the updates.

refresh (background or user-initiated) or if it doesn't exist.

Add a way to see the error if the cinnamon or flatpak updaters fail
to load.

Should have been done in 415289a

The existing icon was added to the icon theme at runtime via
gtk_icon_theme_append_path. Unfortunately custom paths are the
very last thing looked at when the theme engine looks for an icon,
choosing to go with 'flatpak' first if the current theme has it,
instead of the exact match that we added.

information.

for runtimes.

installation exists.

The new flatpak changes require this version.

* Selective flatpak updates.

* flatpakUpdater: Fix method name for homepage url.

* Escape markup for flatpak and cinnamon name/summaries.

* Use a new flatpak symbolic icon in mintcommon.

* Restore base package check.

This lets gtk themes be installed with any package updates, not
just for platforms.

* Make flatpak support behavior similar to cinnamon's, re-order
package types in the update list.

already before adding/removing them.

It doesn't really matter if they do or not.