Lint frontend tests, including checking for accidental fdescribe/fit

frontend/test/.eslintrc

frontend/test/e2e/admin/datamodel.spec.js

frontend/test/e2e/admin/people.spec.js

frontend/test/e2e/auth/login.spec.js

frontend/test/e2e/query_builder/query_builder.spec.js

frontend/test/e2e/query_builder/tutorial.spec.js

frontend/test/e2e/setup/signup.spec.js

frontend/test/e2e/support/shared-resource.js

frontend/test/e2e/support/utils.js

frontend/test/karma.conf.js

frontend/test/unit/lib/expressions.spec.js

package.json

yarn.lock