rubocop noise: switched to predicate comparisons

Also introduced because of .ruby-version specification

http://www.rubydoc.info/gems/rubocop/RuboCop/Cop/Style/NumericPredicate

app/validators/input_options_presence_validator.rb

@@ -2,7 +2,7 @@
 class InputOptionsPresenceValidator < ActiveModel::EachValidator
   def validate_each(record, attribute, value)
     return true unless record.input_type =~ /radio|check/i
-    return true if value.present? && value.count > 0
+    return true if value.present? && value.count.positive?
 
     record.errors[attribute] << (options[:message] ||
                                 "You must provide answer options for the selected input type.")