Project framework

Created a unique project package "edu.calstatela.cs594.plannerplusplus".
Added ClassRoom management, including model class and Database. Created
a UI to add and display classroom information. Able to pick coordinates
of a classroom from a google map fragment but haven't integrated it in.
Revert "Project framework"

This reverts commit f219fbb11077a842aff4103b0eabd11877a7b98d.
Project Framework

Unique package name and Other parts can be added to this one. Added
Classroom management (including model class, database access and
display/add classrooms). Picking classroom location from google map
hasn't been integrated yet.