Recovery from errors during command update

[Krzmbrzl]

When performing a command update the plugin should deal better with unknown data types. It should ask the user to put in another type instead and try to recognize that one and if nothing helps it should simply use the Unknown type in order to at least recognize the command at all

[Krzmbrzl]

If any error occurs during the command-processing the user should be prompted to type in the information by him/herself

[Krzmbrzl]

Things that need to be tested:

• Does the command-update work without any errors
• Functionality of the "insert-command-dialog" that pops up when an error oocurs (just turn off your wifi during the update to force an error). Does the command entered like that appear after the command-update (just make up a fictive command)
• Does the "Skip All" button in the error-popup work properly
• Does the "Skip" button in the error-popup work properly
• Are all commands that have produced an error and have been skipped shown at the end of the process?

[Krzmbrzl]

createUnit crashes the whole command update without the error-popup ever showing