Task-number: QTCREATORBUG-2242

There was a bug in 5cd6ebfd which meant
no reindent of the current line was triggered for the opening curly
brace on a new line.

Task-number: QTCREATORBUG-2331

Reviewed-by: Friedemann Kleint
Reviewed-by: hjk

Reviewed-by: Friedemann Kleint

Reviewed-by: dt

Reviewed-by: Pawel Polanski

Reviewed-by: hjk

Task-number: QTCREATORBUG-2337

Fix a small memory leak spotted by Denis Mingulov.

Task-number: QTCREATORBUG-2338

Task-number: QTCREATORBUG-2334

Reviewed-By: hjk

Task-Nr: QTCREATORBUG-2336

Thanks to dt for noticing this messup!

 * Add an option to the session manager to restore the last
   session on startup of creator.
 * Align close button on session manager dialog with the other
   buttons.
 * Clean up handling of session restoration in the ProjectExplorer:
   Move all the relevant code into determineSessionToRestoreAtStartup,
   since most was there already.

Task-number: QTCREATORBUG-2324

Indicating the file is to be copied as is and not preprocessed.

Task-number: QTCREATORBUG-2344

Task-number: QTCREATORBUG-2315

Also introduce a indirection, modes have now types, edit and debug have
the same type, and editors do have a prefered type of modes instead of a
prefered mode.

That fixes the bug that if the prefered qml editing mode was set to
design, then in switching between qml editors would
- in Edit Mode: stay in edit mode
- in Debug Mode: switch to debug mode

Task-number: QTCREATORBUG-2343

Reviewed-by: Alessandro Portale

Reviewed-by: hjk

'Align continuation lines' should be easier to understand.

Done-with: Friedemann Kleint