querying boulders that did not expire yet
removed old mapping and constraint from floor plan

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#	modified:   grails-app/controllers/bcomp/api/GymController.groovy
#	modified:   grails-app/domain/bcomp/gym/Gym.groovy
#	modified:   src/groovy/bcomp/SampleData.groovy
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attached a photo to each boulder

extended REST API to add a photo to a boulder, get it, and delete it
removed explicit sqlType for photo column
only adding photo property to boulder JSON when there is one
storing notification requests in DB
added CORS plugin and confiugured it for /notifications