Bump rails, mongoid and state_machines-mongoid #418

Job	Run time
Lint Ruby / Run RuboCop	28s
Lint SCSS / Run Stylelint	13s
Lint JavaScript / Run Standardx	17s
Security Analysis / Run Brakeman	27s
Test JavaScript / Run Jasmine	34s
Test Ruby / Run RSpec	40s
	2m 39s

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