Added two more tables to the database

The Tasks table was left the same, but the variable TABLE_NAME was changed to
TASK_TABLE_NAME to avoid confusion with the other two tables

A table containing the user settings was added in order to store the user
profile setting for the application

A table containing the schedule of event day by day was added so that the app
can maintain a list of the tasks it has scheduled if it needs to display them
or modify them without having to hit the calendar / internet
Database Helper Database version increased to 2

The database version was increased because the format of the tables changed
even though the task table was left alone
Changed the task table name variable name

The database name variable's name was changed from TABLE_NAME to TASK_TABLE_NAME