replaced accept button asset
updated asset for declining bubl invitation
replaced left / right arrow image assets
set font of contact label to BariolLight
set text color of contact cell to dark gray
adjusted size of selected and unselected circles
updated fonts of table view in contacts list
updated curved top background image
set fonts and text color for time picker rows
converted selected date sting to NSDate for setting bubl time
add time to parameters map for posting bubl to backend
check for nil before inserting time parameter in to json map
dismiss time picker when tapping in dark gray area