Used literalSearch for getTaskToEdit() instead of exactSearch
Changed getTaskToEdit() to use literalSearch()
Wrote literalSearch()
Added message for edit
Merge branch 'master' of https://github.com/cs2103aug2014-t7-2/main

# By Natalie Rawle
# Via Natalie Rawle
* 'master' of https://github.com/cs2103aug2014-t7-2/main:
  initialized all variables in task
  fixed autocomplete to give more subcommands when the previous word is a no-argument subcommand