QmlDesigner: V8 is not anymore present in 5.2

Change-Id: Ie154a02719f4706b9edc872767b137fe6f9977bc
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
Add description to pastebin.com-protocol.

The api_paste_name parameter actually is a description/title.
Introduce new PostUserNameCapability to enable user name control.

Task-number: QTCREATORBUG-9996
Change-Id: I4a40dd88b2a8844fb6f27ba01e47226e2a61a042
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Snippet: Fix snippets with : in them

* Fix the parser
* Add a unit test for this

Change-Id: I202f845e12c9b6203444f3bb12d7a9229c8a2887
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>