Added a label for todoitem priority levels
Added functionality to priorityLevelLabel
Clicking on showDoneButton inputs 'display done' in inputField
Added a folder for logs for not polluting the root dir
Merge branch 'staging' into jin/gui
Change the alpha value (transparency) of the cell's background based on the task's priority level
Merge pull request #140 from cs2103aug2014-w13-1c/jin/gui

Views for priority levels and completed tasks
Added time parsing and priority detection

- now the date format must be dd MMMM yyyy HH:mm
- can detect priority in string type (have to ask the Model on how to
implement priority)
Merge branch 'staging' into ryan/controller
Use constants for priority levels
Revert modification of priority constants
Correctly passed priority to Model
Use substring to get priority
Merge branch 'ryan/controller' of github.com:cs2103aug2014-w13-1c/main into jin/gui
Fixed issue and created ActionController skeleton
Merge branch 'ryan/controller' of https://github.com/cs2103aug2014-w13-1c/main into jolly/gui

Conflicts:
	.gitignore
Merge branch 'jin/gui' of https://github.com/cs2103aug2014-w13-1c/main into jolly/gui
added support for priorities in convertlist