[573280] added goto last/next edit position to disabled extension list

In order to hide the two actions from the toolbar their IDs are added to
the disabledextensions activity pattern.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=573280
Change-Id: I7f69f1518941343d91d4f8c39fe7d84023d391bd
1 file changed