Full support of floating task

run inputwindow to start Indigo
UnDo bug fix

bug fixed:
-can undo for delete
-there is a limit for no. of undo operation
-undo functions properly after normal input after an undo
unDate undo
Status isCompleted added

parser now will trim the command first before process the command
change textarea to textpane, test on edit works
resolve conflict IndigoMain

Conflicts:
	IndigoMain.java
Change changecomm method in IndigoMain to getCommand
complete and Uncomplete added
trim bug fixed
"Complete index" command added

it's used to indicate a task is completed.
can view by typing "view -undone" "view -done"
Change date String output to dateFormat and change the view in input window to include date
Index conversion and adjustment

instead of counting from 0. the index should be displayed from 1
onwards.
bugs documentation
Merge branch 'Floating-Task' of https://github.com/cs2103aug2014-t11-4j/main into Floating-Task
Debugging

textPane is set non-editable.
Merge pull request #39 from cs2103aug2014-t11-4j/Floating-Task

Floating task