Updated with option to return from BP screen to main screen, resolved screen navigation issues

Dependencies:   SDFileSystem TFTLCD_8bit ds3231 program mbed

Fork of poc_dis_5 by SenseSemi

Revision:
4:6bd81bb1790d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eeprom.lib	Wed Mar 01 18:49:33 2017 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/teams/SenseSemi/code/program/#4707b0a9acaa