Refresh

[mlablah]

As a user, I want to be able to manually trigger a refresh of the list displaying my currently installed addons.

When the list is refreshed it should show the current state of the addons in the Interface folder and the latest versions of the addon that are available online.

Pseudo code:

• Read Interface folder path from config.
  • If path not set in config execute Set path (work done in separate issue).
• Execute Parse Interface folder (work done in separate issue).
• Display addons that should be shown in scrollable list.
• Execute Compare AddOns (work done in separate issue).
• Enable Update button for items in list where newer version is available.
• Enable Update All button if at least one addon has a newer version available.