Add append function for conditional dates
Display start date, end date and priority. Priority will be handled another way in the future (maybe by colouring the row?)
Increased the size of the display window to 1024x768
Defaults focus to userInputField upon program startup
Remove unused import
Change validateUserInput to private, write test for it.
Need to do more research on how to write JavaFX unit tests...
Removed isConditional field in task
Merge branch 'pn-modify-conditional-task' of github.com:cs2103aug2014-w13-4j/main into pn-modify-chuyu-storage

Conflicts:
	src/models/Task.java
removed is_confirmed enum
Merge branch 'pn-modify-chuyu-storage' of https://github.com/cs2103aug2014-w13-4j/main into chuyu-storage
Merge branch 'chuyu-storage' of github.com:cs2103aug2014-w13-4j/main into pn-modify-chuyu-storage
Removed redundant test and setConfirmed
Merge branch 'pn-logic' of github.com:cs2103aug2014-w13-4j/main into pn-modify-chuyu-storage
Merge branch 'pn-logic' of github.com:cs2103aug2014-w13-4j/main into pn-modify-chuyu-storage
Merge branch 'emmeryn-basic-gui' of https://github.com/cs2103aug2014-w13-4j/main
get all tasks get all tasks that are not deleted
Fixed bug in setting start date
Merge branch 'chuyu-storage' of https://github.com/cs2103aug2014-w13-4j/main
Fixed typos