Database Write Update

Updated methods to write and update entries in the database. Included
new date information
Create page date enhancements

- RadioGroup has been removed. Replaced by edit icon for accessing
DatePicker
- DatePicker initializer has been updated. Dialog created with long
date value stored in TextView tag to prevent dialog from resetting to
today's date.
- Added content description attributes for icons (edit, delete)
Included date information in Detail screen

Date information has been added in the EditActivity page showing
detailed information for a particular person