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All deepj commits

Fix SimpleCov deprecation messagehanami
Avoid creating blank line in generated Gemfilehanami
Add favicon helperhanami
Fix SimpleCov deprecation messageview
Performance improvement of Lotus::Layout.templateview
Test only against JRuby 9k on Travisview
Fix SimpleCov deprecation messageutils
Fix deprecation_test.rb under JRuby 9000utils
Use the latest JRuby 9.0.5.0 instead of old JRuby 9.0.0.0.pre1 version on Travisvalidations
Fix SimpleCov deprecation messagevalidations
Introduce invalid? method as an opposite to valid?validations
Fix SimpleCov deprecation messagemodel
Use the latest JRuby 9.0.5.0 instead of old JRuby 9.0.0.0.pre1 version on Traviscontroller
Fix SimpleCov deprecation messagecontroller
Use the latest JRuby 9.0.5.0 instead of old JRuby 9.0.0.0.pre1 version on Travisrouter
Fix SimpleCov deprecation messagerouter
Fix SimpleCov deprecation messageassets
Add favicon helperassets
Add favicon helperassets
Use the latest JRuby 9.0.5.0 instead of old JRuby 9.0.0.0.pre1 version on Travishelpers
Fix SimpleCov deprecation messagehelpers
Use the latest JRuby 9.0.5.0 instead of old JRuby 9.0.0.0.pre1 version on Travismailer
Fix SimpleCov deprecation messagemailer