FIX: Fix browser detection for Microsoft Edge. (#6516)

cool!

config/locales/server.en.yml

@@ -709,6 +709,7 @@ en:
       firefox: "Firefox"
       opera: "Opera"
       ie: "Internet Explorer"
+      edge: "Microsoft Edge"
       unknown: "unknown browser"
     device:
       android: "Android Device"

lib/browser_detection.rb

@@ -2,6 +2,8 @@ module BrowserDetection
 
   def self.browser(user_agent)
     case user_agent
+    when /Edge/i
+      :edge
     when /Opera/i, /OPR/i
       :opera
     when /Firefox/i

spec/lib/browser_detection_spec.rb

@@ -27,6 +27,7 @@ describe BrowserDetection do
       ["Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.157 Safari/537.36", :chrome, :linux, :linux],
       ["Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/47.0 (Chrome)", :firefox, :linux, :linux],
       ["Opera/9.80 (X11; Linux zvav; U; en) Presto/2.12.423 Version/12.16", :opera, :linux, :linux],
+      ["Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246", :edge, :windows, :windows],
     ].each do |user_agent, browser, device, os|
       expect(BrowserDetection.browser(user_agent)).to eq(browser)
       expect(BrowserDetection.device(user_agent)).to eq(device)