new unit test case: deleteNotExistTask
new unit test case: update date
new unit test case: update task that does not exist
new unit test case: update wrong type task
new test case: update task already pass the current time
fix wrong-naming test case
#115 new test case: mark task does not exist
rewrite java doc of confirmTask test case
new unit test case: confirm test case does not exist
new test case: confirm task not tentative
#115 new unit test case: confirm invalid date id
Modified callback page to display better response

Due to Chrome 36+, they decided to reenforce javascript on closing
windows. For now, I change the landing page to request the user to
close the page rather than `waiting…` instead.
Disable logging of jetty

Should not be viewable by the user
code tag for A0119504L
Merge branch 'master' of https://github.com/cs2103aug2014-w11-4j/main
rewrite code tag for A0119504L
Merge branch 'master' into output_format
Revert "Added code tagging for Jason"

This reverts commit 2670635352612e23222f2c885acf70ec09438b5d.
Revise and Formatted Code Tagging
Revised Code Tagging for Test Cases