Attempt to fix the login dialog on cubbli

Author: nygrenh

tmc-plugin/src/fi/helsinki/cs/tmc/ui/LoginDialog.form

@@ -8,7 +8,7 @@
     </Property>
   </Properties>
   <SyntheticProperties>
-    <SyntheticProperty name="formSize" type="java.awt.Dimension" value="-84,-19,0,5,115,114,0,18,106,97,118,97,46,97,119,116,46,68,105,109,101,110,115,105,111,110,65,-114,-39,-41,-84,95,68,20,2,0,2,73,0,6,104,101,105,103,104,116,73,0,5,119,105,100,116,104,120,112,0,0,0,-57,0,0,1,73"/>
+    <SyntheticProperty name="formSize" type="java.awt.Dimension" value="-84,-19,0,5,115,114,0,18,106,97,118,97,46,97,119,116,46,68,105,109,101,110,115,105,111,110,65,-114,-39,-41,-84,95,68,20,2,0,2,73,0,6,104,101,105,103,104,116,73,0,5,119,105,100,116,104,120,112,0,0,0,-46,0,0,1,73"/>
     <SyntheticProperty name="formSizePolicy" type="int" value="0"/>
     <SyntheticProperty name="generateSize" type="boolean" value="true"/>
     <SyntheticProperty name="generateCenter" type="boolean" value="true"/>
@@ -76,7 +76,7 @@
                   <Component id="cancelButton" alignment="3" min="-2" max="-2" attributes="0"/>
                   <Component id="loginButton" alignment="3" min="-2" max="-2" attributes="0"/>
               </Group>
-              <EmptySpace min="-2" max="-2" attributes="0"/>
+              <EmptySpace pref="23" max="32767" attributes="0"/>
           </Group>
       </Group>
     </DimensionLayout>

tmc-plugin/src/fi/helsinki/cs/tmc/ui/LoginDialog.java

@@ -139,11 +139,11 @@ public void actionPerformed(java.awt.event.ActionEvent evt) {
                 .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                     .addComponent(cancelButton)
                     .addComponent(loginButton))
-                .addContainerGap())
+                .addContainerGap(23, Short.MAX_VALUE))
         );
 
-        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
-        setBounds((screenSize.width-329)/2, (screenSize.height-199)/2, 329, 199);
+        setSize(new java.awt.Dimension(329, 210));
+        setLocationRelativeTo(null);
     }// </editor-fold>//GEN-END:initComponents
 
     private void cancelButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cancelButtonActionPerformed