fet(custom-scripts): added custom scripts support (#1425)

[coveralls]

Pull Request Test Coverage Report for Build 1751

• 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.003%) to 53.53%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/app/shared/services/auth.service.ts	0	1	0.0%
<!--	Total:	0	1	0.0%	-->

Files with Coverage Reduction	New Missed Lines	%
src/app/shared/services/auth.service.ts	1	46.15%
<!--	Total:	1		-->

Totals
Change from base Build 1749:	-0.003%
Covered Lines:	9522
Relevant Lines:	15785

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💛 - Coveralls