Remove 'Ubuntu Store'

[sverzegnassi]

No description provided.

[sverzegnassi]

Do not merge yet

[NeoTheThird]

I enabled branch protection.

[NeoTheThird]

It built, good job! If you think it's ready and want review, say the word.

[sverzegnassi]

@NeoTheThird We're ready! \o/

I realize that it's impossible to review this PR. I apologize, but it was inevitable.

Long story short: the app scope was actually another interface to the Ubuntu Store. There's for sure some dead code into the source code; however, we can safely say that there is no code that use a network connection.

I tested it for a while, and everything seems to work well.

In order to get the QA working faster, here's a small list of things to check:

• .click apps can be launched from the scope
• .deb apps can be launched from the scope (e.g. webbrowser-app)
• Removable .click apps can actually be removed, and scope deletes the related icon from the dash
• Install an app from OpenStore and the related icon appears on the dash
• Search for an installed app, and repeat the tests above
• Long press on an icon: app title, app icon, and related actions are properly displayed
• Repeat the tests until the scope crashes 😛
• In the "Manage scopes" bottom edge, "Apps" scope is listed and the icon is visible

[NeoTheThird]

Great work, thank you!

I realize that it's impossible to review this PR. I apologize, but it was inevitable.

Yeah, never mind. I'm not reading 5000 lines :P

Let's get this merged, it seems to me like it should work. And if it doesn't, well, at least we'll be able to see it faster with more eyes on devel.