Merge pull request #153 from cs2103aug2014-w13-1c/jolly/gui

Jolly/gui
More comments for ModelUnits
Merge branch 'dat/model'
Merge pull request #165 from cs2103aug2014-w13-1c/staging

Merge staging for (actual) v0.2 release
commented out changing of done/undone flag because of revert
added more comments for heuristics testing
Merge pull request #166 from cs2103aug2014-w13-1c/jin/gui

Reimplemented Ryan's reverted commit
Merge remote-tracking branch 'origin/staging' into jolly/gui
removed jnativehook implementation for keyboard activation, unused libs, and optimized imports
removed todoitemobserver
Merge branch 'staging' of github.com:cs2103aug2014-w13-1c/main into staging
Added a tickLabel for visual feedback of done tasks. Clicking the 'done' button will fill the inputField with 'done' or 'undone' depending on the task's done status
Added a tooltip to the taskNameLabel such that when hovered over, it'll display the entire task name.
Merge branch 'jin/gui' of github.com:cs2103aug2014-w13-1c/main into jin/gui