Display table now displays columns.
Merge branch 'master' of https://github.com/cs2103aug2014-T13-2J/main

# By mervynwee
# Via mervynwee
* 'master' of https://github.com/cs2103aug2014-T13-2J/main:
  Fix the criteria for a floating task
  Disallow floating tasks to update venue, time, date, recurrence and reminder fields.