Fix all the following issues which we faced during 01st April internal demo 1) Display hang and jump issue 2) Sequencing issue 3) Issue with BP code

Dependencies:   SDFileSystem ds3231 program mbed testUniGraphic_150217

Fork of Int_Demo_01Apr2017_newdisplaycode_bp_nikita by nikita teggi

Revision:
0:c47fb0c1bbf6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ds3231.lib	Tue Dec 27 10:30:48 2016 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/teams/Maxim-Integrated/code/ds3231/#11630748e2f2