[intellij] simplified proposal sorting
[xtend] Cannot open the editor for the Xtend file from the history view

see https://bugs.eclipse.org/bugs/show_bug.cgi?id=452285

Change-Id: Ifceb239e3d38c047509de698d2b2fb431f98bac2
[xbase] fixes bug 453443: deprecate old formatter impl

https://bugs.eclipse.org/bugs/show_bug.cgi?id=453443
Merge "[intellij] simplified proposal sorting"
Merge "[xtend] Cannot open the editor for the Xtend file from the history view"
Merge "[xbase] fixes bug 453443: deprecate old formatter impl"