Automatically populate map parameters

[coveralls]

Pull Request Test Coverage Report for Build 556

• 505 of 561 (90.02%) changed or added relevant lines in 37 files are covered.
• 8 unchanged lines in 5 files lost coverage.
• Overall coverage increased (+2.9%) to 89.596%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
lib/marc/LongitudeImage.cpp	3	4	75.0%
lib/marc/SimpleCylindrical.cpp	20	21	95.24%
lib/marc/ViewingGeometry.cpp	6	7	85.71%
src/MapCommand.h	0	1	0.0%
src/calc.cpp	2	3	66.67%
src/calc.h	1	2	50.0%
lib/marc/PhotoImage.cpp	0	2	0.0%
lib/marc/PolarStereographic.cpp	0	2	0.0%
src/FITS_image_t.cpp	8	10	80.0%
src/MapCommand.cpp	25	27	92.59%
<!--	Total:	505	561	90.02%	-->

Files with Coverage Reduction	New Missed Lines	%
lib/marc/Orthographic.cpp	1	85.02%
lib/marc/ViewingGeometry.cpp	1	89.73%
src/MapCommand.cpp	1	94.26%
src/parse.yy	2	87.17%
lib/marc/optional.h	3	86.11%
<!--	Total:	8		-->

Totals
Change from base Build 552:	2.9%
Covered Lines:	2971
Relevant Lines:	3316

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💛 - Coveralls