Improved "Save as" behaviour:   * User is no longer prompted for overwrite if the file does not exist  * The extension ".work" is now added automatically  * The file name now defaults to the model name
Improved "Save as" behaviour: 
 * User is no longer prompted for overwrite if the file does not exist
 * The extension ".work" is now added automatically
 * The file name now defaults to the model name
tuura/workcraft,tuura/workcraft,danilovesky/workcraft,workcraft/workcraft,tuura/workcraft,jrbeaumont/workcraft,danilovesky/workcraft,workcraft/workcraft,danilovesky/workcraft,jrbeaumont/workcraft,jrbeaumont/workcraft,workcraft/workcraft,danilovesky/workcraft,workcraft/workcraft