Removed irrelevant test
Created a method for Add to decide where to add task to
Minor edits to the Edit class
Edited the list to use for the Remove class
Editing Undo
Trying out the old Edit function
Merge branch 'master' of https://github.com/cs2103aug2014-t7-2/main

# By Yui Wei
# Via Yui Wei
* 'master' of https://github.com/cs2103aug2014-t7-2/main:
  fixed tostring/toprint