Correct GPS selection radius

[githengi]

Resolves #210

[coveralls]

Pull Request Test Coverage Report for Build 1449

• 0 of 13 (0.0%) changed or added relevant lines in 5 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.06%) to 40.751%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
opensrp-reveal/src/main/java/org/smartregister/reveal/presenter/ValidateUserLocationPresenter.java	0	1	0.0%
opensrp-reveal/src/main/java/org/smartregister/reveal/widget/GeoWidgetFactory.java	0	1	0.0%
opensrp-reveal/src/main/java/org/smartregister/reveal/presenter/ListTaskPresenter.java	0	3	0.0%
opensrp-reveal/src/main/java/org/smartregister/reveal/util/Utils.java	0	3	0.0%
opensrp-reveal/src/main/java/org/smartregister/reveal/view/ListTasksActivity.java	0	5	0.0%

Files with Coverage Reduction	New Missed Lines	%
opensrp-reveal/src/main/java/org/smartregister/reveal/presenter/ListTaskPresenter.java	1	0.0%

Totals
Change from base Build 1441:	-0.06%
Covered Lines:	1542
Relevant Lines:	3784

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💛 - Coveralls