Added buttons to new entry. Also added new data activity.
In new entry, added a save and cancel button.  Also have a way to
close keyboard after typing.
Also added new data activity to switch to after clicking on save or
cancel button.
Added new activity for displaying recorded data.
Added navigation buttons and functionality for all activities.
Can navigate events, data and new entry.  Does not store data so
record entry will be lost after transferring to different
activities.