BUG: 291742
FEATURE: 85807

The popup menu of diagram list view items now contain the standard cut/copy
menu entries. A new entry 'Duplicate' allows duplicating a diagram and all
widgets, but not the underlying UML representations.

FEATURE: 85807
BUG: 327670
GUI

Decoding of UMLObjects now uses the same code path on all clips. Fixes that
recently went to clip1 are now also active for clip2 (diagrams). List view
items are never decoded, but created in response of a signal of new UMLObjects.

When pasting clip2 in the same file, only the diagram gets duplicated and not
all contained UMLObjects, like described in feature request 85807.

BUG: 327910
BUG: 327670
CCBUG: 85807

Cleans up git status output. Ignored files include all files generated at build
time, backup/swap files generated by Dolphin, KDevelop, Kate, Vi, Emacs, etc.

BUG: 328749

The createItem, createUMLObject and createChildUMLObject methods are replaced
by calls to Object_Factory. The only changes to Object_Factory involve
pre-setting a name on classifier list items so there's no behavioural change
(item creation in the list view is 'quick' - no dialog popping up).

Related code cleanup:
* unused diagram creation code
* unused itemRenamed method (UMListViewItem handles that)
* unused lines in createChildUMLObject handling renaming of classifier list
  items, which was also handled by the UMLListViewItem (e.g. determining the
  return type of an operation based on the new text of a list item)

BUG: 328739

Resize filename and dir column according to the content, which makes importwizard select dialog more usable.

This reverts commit 276db0de.

The problem has been caused by handling the diagram context menu on
two source code locations, which results into a race condition.

BUG:328257

isSelected() from QGraphicsItem instead of self provided
members/methods.

CCBUG:310283

CCBUG:310283

BUG:328066
FIXED-IN:4.11.4
(cherry picked from commit e394b5a6)

BUG: 328065
FIXED-IN:4.11.4
(cherry picked from commit 779a898a)

BUG:328064
FIXED-IN:4.11.4
(cherry picked from commit 098d0b47)

Searching for comment end tag should start *after* comment start tag,
otherwise the comment start tag will be interpreted as comment end tag too.

BUG:328055
FIXED-IN:4.11.4
(cherry picked from commit f8777927)

This has been made possible now because widgets use QGraphicsScene::contextMenuEvent().

This also makes the behaviour of the (still partly broken) diagram duplication
a bit more acceptable/usable untill bug 327670 has been resolved.

CCBUG: 327669

CCBUG: 327834

BUG:327870

BUG: 327834

BUG:327870
FIXED-IN:4.11.4
(cherry picked from commit 40377231)

CCMAIL: ralf.habacker@sag.eu

BUG:209552
(cherry picked from commit 0d413fa8)

BUG:209552