Set view busy when remorse is running

otherwise the view.busy is undefined.
This had previously been handled differently but was overlookedin the
changes about unapply all.

See 573ce87 for the original handling, and PR sailfishos-patches#272.

Author: nephros

src/qml/PatchManagerPage.qml

@@ -257,7 +257,7 @@ Page {
 //        }
 //        section.property: "section"
 
-        property bool busy
+        property bool busy: menuRemorse.active
         signal unapplyAll
         signal unapplyAllFinished
         signal applyPatchFinished(string patchName)