Revert "Merge branch 'ryan/controller' of https://github.com/cs2103aug2014-w13-1c/main into jolly/gui"

This reverts commit 6560253707594869d490c137c6d6d0139905bbeb, reversing
changes made to 038889e2887abff01812400722c61abf700abf77.
Fixed #162. Changing savefile location doesn't work because the changeSaveLocation method has been removed due to the revert of the bad commit.
Merge pull request #164 from cs2103aug2014-w13-1c/jin/gui

Reverted commit 6560253, which introduced the update bug.