Fix install output for wizard #2
Description
OK current situation installer runs with a -quiet option, but then the user has no feedback.
Anaconda does not have a semi-quiet option so we need to fix this on the wizard end.
We need to look into turning on 'quiet' then handling the output better. At the moment the 'append' command to put the text in the box is running too slow for the amount of output coming in (For instance after running it and then terminating the install, messages continued to appear for several minutes after).
Solutions might involve processing the output to only append some of it or perhaps using jobs to batch messages and only append to console once in a while.