Made watch-filesystem-events unbuffered

http://stackoverflow.com/a/107717/390044
Fixed glitches in GUI's Runs tab

RunHistoryView got initialized incorrectly when the GUI is reloaded with
the Runs tab activated.
3x-import for creating a repository from CSV data
3x-import: more sanity check + usage
3x-results in JSON format

Fixed 3x-import and gui/server.coffee to rely on 3x-results' JSON
format.
Fixed 3x-results to output JSON intact
Test case for output values containing whitespaces