* Allow for a more controlled setup of buildconfigurations inside
   the targets.

Reviewed-by: dt

Task-number: QTCREATORBUG-961

Task-number: QTCREATORBUG-919
Reviewed-by: Roberto Raggi

- Put classes into namespace.
- Fix settings not storing the selected protocol.
- Refactor settings by introducing standard handling.
- Create PasteSelectDialog class and fix list/refresh handling.
- No longer stuff the QListWidget into the protocol for listing, wire
via signals.

QML Designer now listens to contextChanged signal instead of
modeChanged and checks that the context is same as that of qmldesigner.

Reviewed-by: con

Limit file name, default to ".txt" suffix if none
can be found. Print errors on empty snippets.

actually hit

It introduced at least one new crash to do with recovering from parsing
errors.

Reviewed-by: Roberto Raggi

Reviewed-by: kh1

The Delete and Backspace keys are blocked when the cursor is
respectively at the end or beginning of a word that is being renamed
in-place. However, when there is a selection, the removal of this
selection is still supposed to be allowed.

Reviewed-by: Robert Loehning

Task-number: QTCREATORBUG-807

Reviewed-By: hunger

Distinguish between pages that are target specific and project specific.
Do the magic hierarchy reduction if only one target is supported just in
the projectwindow. Treat the targets page specially.

Reviewed-By: hunger

Reviewed-By: con

Reviewed-By: con

Task-number: QTCREATORBUG-450