Modifying layout designs;

Closes #133 (closed). Modify the layout designs of the guest visit fragments to be seamless and better match the overall theme.

TESTING: Shouldn't need testing but to see the design changes, navigate to the guest visit scanner in the app (Guest Forms -> Guest Visit Check In (Local Database)). Scan a Code 39 barcode and press the Confirm Scan button. When you get to the GuestScanConfirmationFragment press the Confirm button. All three of the layouts up to and including the questionnaire have been modified (also the fragment_guest_scan_confirmation_reg layout has been modified to match as well).

NOTE: I removed some redundant cast from GuestScanFragment.java.

NOTE: I also added licenses to each of the layouts