Refactor Files to Naming Convention, Clean-up Unused Layout Elements

The following files have been refactored:
    * src/com.example.classlocus/Building_Detail.java has been renamed to BuildingDetail.java
    * res/menu/building__detail.xml has been renamed to building_detail.xml
    * All unused TextView and EditText elements have been removed from res/layout/activity_main.xml
    * All unused TextView and EditText elements have been added to new file res/layout/old.xml