fix context text issue in the ongoing notification when cyclic calls are
being queued
fix the visibility issue of the "Call" action button when "Repeat" value
is not set
handle empty in-between call delay
add prefix to reference file name in the ongoing notifiation
change current index value in map view when user taps on a marker
move tick text of mode change to string resource
add a select all action item to the contextual action bar in main
activity
set MOS output text format to fixed 2 fraction digits
show confirmation dialog before deleting records