ProjectExplorer: Allow to schedule a build/run during a project parse

Once we parsed the project initially, subsequent parses typically do not
change things in a major way, so we can expect e.g. run configurations to
stay intact.
It therefore makes sense to allow users to schedule an
application run not only during a build (see 4b92b7ac60), but also
during a parse. Arguably, this is even more relevant, as parsing is
usually not triggered directly by the user, but happens as a side effect
of editing a document or switching a branch. It is then annoying for
users to have to wait until the respective buttons get enabled again.

Fixes: QTCREATORBUG-24986
Change-Id: I1081ccde668eee794c39b96cd0bad5c3aaa580bc
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/buildconfiguration.h

@@ -91,8 +91,8 @@ public:
     bool fromMap(const QVariantMap &map) override;
     QVariantMap toMap() const override;
 
-    virtual bool isEnabled() const;
-    virtual QString disabledReason() const;
+    bool isEnabled() const;
+    QString disabledReason() const;
 
     virtual bool regenerateBuildFiles(Node *node);