NOISSUE even more java polishing

* Memory minimums lowered to 128M in all Java settings UIs
* Changing the memory sizes on the wizard page does not automatically trigger checks if the executable doesn't have 'java' in the name
* Java detection on linux now scans some common JRE locations, not just /usr/bin/java

application/setupwizard/JavaWizardPage.h

@@ -52,6 +52,7 @@ protected slots:
 	void checkFinished(JavaCheckResult result);
 
 protected: /* methods */
+	void checkJavaPathOnEdit(const QString &path);
 	void checkJavaPath(const QString &path);
 	void setJavaStatus(JavaStatus status);
 	void setupUi();