added SQL queries for deleting an item (and its timestamps) - #11
added validation checking to updateName() to make sure the name is different and that another item does not already use the new name (all item names should be unique) - #11
added javadoc for open() function
toast if remaning of item already exists #11
added confirm box on deleting items
implemented delete item
Centered buttons on main activity
fixed bug where the SQLiteDatabase object may not be initialized
minor comment update
set edit activity to return to main activity on success
merged changes from removal of Context argument on a number of methods with updates to use dbInit() method for initializing the SQLiteDatabase
finished updating methods which no longer require a Context argument
replaced some exception throws with toaster notifications instead (more graceful)
major refactoring to clean up code; moved all strings and other contants to separate Constants class
removed unused gravity tag
Text are now string resources
Updated two broken string resources and fixed item duplicate error
fixed a few more string resources
set limit for characters edit item and testing tablerow weight
set weight of tablerow and width of goal items