In the Authentication Dialog box 
1. Login will be disabled for empty username or password
2. If anonymous login is selected then the login will be enabled by default
3. Modified the default invocation of JOptionPane showDialog to custom optionPane

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@15570 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Use same password authentication object.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@15571 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merge remote-tracking branch 'upstream'