change getAllGroups to getAllRichGroupsWithAttrsByName in VoGroupsTabItem
GUI: support for setting preferred unix group name
Merge pull request #491 from zlamalp/prefGroup

GUI: support for setting preferred unix group name
GUI: refactored and optimized gwt modules

- Based on knowledge from WUI project, gwt now uses inheritance:

- standard "mvn clean install" builds devel version of gui without sourcesMaps
  => speed up compile
- "mvn clean install -Pproduction" builds production version of gui without sourcesMaps
  but fo all browsers. Now uses xsiframe linker.
- for local development pick "-dev" modules, they build also sources map, but support only
  two browsers.

- Moved .gwt.xml files to ensure visibility to gwt compiler.
Merge pull request #492 from zlamalp/guigwt

GUI: refactored and optimized gwt modules
U:D:login-namespace - allow login tomcat

Login 'tomcat' was forbidden because it can collide with unix system
user tomcat. Actually system user's name is tomcat6 or tomcat7.

Conclusion:
login tomcat is allowed
logins tomcat[678] are forbidden
Optimalization of toString methods

- toString and serializeToString methods in beans optimalized, '+' substituted by StringBuilder
Fix objects in exception in defaultUnixGidModule

 - add also facility to this exception
Merge pull request #494 from stavamichal/addAllBeansToExceptionsInDefaultUnixGidModule

Fix objects in exception in defaultUnixGidModule
GUI: Display notice when browser is unsupported.

- Check by supported features if browser is unsupported (IE < 8)
  and if so, display alert notice.
Merge pull request #495 from zlamalp/unsupported

GUI: Display notice when browser is unsupported.
Fix SQL query in method getVoExtSources

 - oracle do not use "as" in sql query
 - postgras do not need "as" in sql query
Merge pull request #496 from stavamichal/fixSQLQueryForMethodGetVoExtSources

Fix SQL query in method getVoExtSources
Add chmod and chown on files created in script sshkeys

 - modify slave script sshkeys: if .ssh directory or .ssh/authorized_keys
  file is created by this script, change ownership on this file and
  directory to USER (to who belongs to). Also change permissions on file
  to 644 and directory to 755 if they are newly created there.
 - add this change to debian changelog
Merge pull request #488 from stavamichal/fixInSshKeySlaveScript

Add chmod and chown on files created in script sshkeys
Add work with dirPermissions in scratchLocal script

  - umask setting create by gen script
  - umask setting read from file by slave script
Merge pull request #498 from stavamichal/fsScratchLocalSetRightsForNewDirectories

Add work with dirPermissions in scratchLocal script
Fix method getRichSubGroupsWithAttributesByNames

This method returned all groups within VO. Now it returns only subgroups.
add clicable sync column to VO groups and group subgroups.
add new cell definition - CustomClicableInfoCellWithImageResource
change load class from Group to RichGroup
GUI: skip warning if at least one item is marked for deletion.