Updating point search task

[jonsteingass]

Updated the point search task for discretization levels. If a wedge is not assigned in the view angle list, then the discretization value is the number of headings to consider instead of considering 16 headings each time.

[derekkingston]

Changing the CMASI MDM has ramifications on backwards compatibility. It's highly preferred that MDMs remain constant. Here you are adding a discretization value to PointSearchTask which should instead use a parameter via the configuration file. An example of a task that uses a configuration parameter is the LineSearchTask which allows the search to be denoted as "single direction". Please change the PointSearchTask to use a discretization parameter from the configuration file.