Provide default windowNotitle values.

Closes #779.
Properly handle pre-creation menu item selection dispatch.

Closes #701.
Merge remote-tracking branch 'upstream/dev' into dev
Work-around for issue #415 (ShareActionProvider does not work if only one intent).
Additional protections for #557.
Merge pull request #863 from Digipom/issue_415

Work-around for issue #415 (ShareActionProvider does not work if only on...
Merge pull request #864 from Digipom/issue_557

Additional protections for #557.
Merge remote-tracking branch 'upstream/dev' into dev