Manage Sessions replaces "Restore last session" (which can be done by clicking
the "(last session)" session anyway. Also, added a "Create New Project" button.
Ensured that the welcome screen is only as high as needed (will orient on the
amount of items in the contained treewidgets). Scrolling is still last resort.

Reviewed-by: Kavindra Palaraja <qtc-committer@nokia.com>

The line would only get a reduced indent when the user actually typed
the }, but not when typing the {, even though the line should still be
unindented because of the } at the start.

Previously this code worked fine because lines didn't used to get
automatically reindented for anything else than the first character.

It broke indentation for global scope operator, and when that was fixed
it broke for the class initializer lists. I'm not sure how to fix that
at the moment, so better have it not do anything rather than being in
the way.

..in an attempt to suppress password prompts.

But the variable was set at some place in Qt4ProjectManagerPlugin.
Do it all in QtVersionManager to avoid exactly the confusion that
happened.

Name::identifier() returns the identifier used to declare the name.

HTML escaping was moved out of the TypePrettyPrinter since it interferes
with other logic there. Instead, the region to mark is now available
from the Overview and used by the FunctionArgumentWidget to put the
current argument in bold.

Introduce settings struct again. Add an errorString() to
the settings class. Change checkP4Command to checkP4Configuration
and make it report errors when appropriate. Make errorString show
up in settings page and add "Test" button.
Build options correctly (omit empty settings) and use basic
options for the test (which was the bug causing p4 to be
disabled if options were actually specified).

to update the parentheses information.

to their label. Less layout involved.

The context menu was updated before the current node was set to the
right value, later in the showContextMenu method.

Task-number: 253989

Introduce convenience to VCSBaseSubmitEditor.
Task-number: 254644

Reviewed-by: Roberto Raggi

The backwards scanner lazily tokenizes strings. This optimizes the
common case where scanning one or two lines is enough while at the same
time we extended the limit from 5 to 10 lines.

Reviewed-by: Roberto Raggi