Solve size problems. Fix #5

Author: GauthierPLM

src/com/github/kennedyoliveira/ultimatepastebin/settings/PasteBinConfigurationForm.form

@@ -6,8 +6,8 @@
       <xy x="20" y="20" width="860" height="450"/>
     </constraints>
     <properties>
-      <minimumSize width="860" height="450"/>
-      <preferredSize width="860" height="450"/>
+      <minimumSize width="-1" height="-1"/>
+      <preferredSize width="-1" height="-1"/>
     </properties>
     <clientProperties>
       <BorderFactoryClass class="java.lang.String" value=""/>