TEIIDDES-2215 passwords not masked in Teiid Connection Importer
Merge pull request #397 from mdrillin/TEIIDDES-2215

TEIIDDES-2215 passwords not masked in Teiid Connection Importer
TEIIDDES-2296
 * replaced the redundant inner panel in DataSourcePropertiesPanel
 * removed the one in DataSourceDriversPanel