Simplify service creation. Minor fixes#24

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dim wants to merge 6 commits intosimplifi:masterfrom

bsm:feature/simpler-services

Commits on Dec 19, 2018

Commits on Jan 7, 2019

Allow to enumerate over paginated results
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Commits on Jan 11, 2019

Added more services, added specs, fixed SegmentService
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Commits on Jan 18, 2019

Add Geo services
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Commits on Feb 8, 2019

Login on unauthorized retry
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