Renamed upgrade script 1.0a3-1.0a4 to 1.1-2.0d1, so it reflects the actual version upgrade, and so it allows us to bump up the version number on 5.0 branch (no data model script there, though)
Check for errors on form before deciding which buttons to display, otherwise it will show the display-mode buttons instead of the edit-mode buttons when there are errors
fixing bug #1494. Installing from apm files would break if there were file names with spaces. My fix was to change to split the output of the tar command on new lines instead of spaces.
