Feature request: text field for filtering driver in webinterface when changing driver

[JensKorte]

When using the webinterface and adding a new printer I get a list of ~40 drivers. It would be nice, if above the list there would be a text field, where I can enter a string and the list get reduced to only the driver names that contain the string.

[michaelrsweet]

OK, I'll queue this up in case we can do something easily with Javascript. But treating this as "nice to have" for v2.4.0...