iOS: Rewrite DWContainer to use a single DWTableViewCell per row. Previously a cell was allocated for each row's column. Instead save an array of NSString and UIImages which can be displayed in the custom UITableViewCell based on the DW_FEATURE_CONTAINER_MODE setting.

# Set these here to change the version for all platforms
DW_MAJOR_VERSION=3
DW_MINOR_VERSION=3