Add browser detection framework

Gemfile

@@ -117,6 +117,9 @@ gem "logstasher"
 # Used to generate images for traces
 gem "gd2-ffij"
 
+# Used for browser detection
+gem "browser"
+
 # Gems useful for development
 group :development do
   gem "annotate"

Gemfile.lock

@@ -67,6 +67,7 @@ GEM
       debug_inspector (>= 0.0.1)
     bootsnap (1.3.2)
       msgpack (~> 1.0)
+    browser (2.5.3)
     builder (3.2.3)
     cancancan (2.3.0)
     canonical-rails (0.2.5)
@@ -394,6 +395,7 @@ DEPENDENCIES
   bigdecimal (~> 1.1.0)
   binding_of_caller
   bootsnap (>= 1.1.0)
+  browser
   cancancan
   canonical-rails
   capybara (~> 2.13)

config/initializers/browser.rb

@@ -0,0 +1,19 @@
+module OpenStreetMap
+  module Browser
+    module Features
+      def html5?
+        webkit? || firefox? || safari? || edge? || ie?(">8")
+      end
+
+      def es5?
+        webkit? || firefox? || safari? || edge? || ie?(">8")
+      end
+
+      def es6?
+        webkit? || firefox? || safari? || edge?
+      end
+    end
+  end
+end
+
+Browser::Base.include(OpenStreetMap::Browser::Features)