Add Mail.Ru icon (#846)

* Add Mail.Ru icon

Added the icon for Mail.Ru taken from the source provided, using the
orange RGB found there as well because of the color of the sites favicon.

* Update Mail.Ru color

Updated the color for Mail.Ru based on feedback by @birjolaxew using the
primary brand color instead of the icon color.

_data/simple-icons.json

@@ -985,6 +985,11 @@
             "hex": "239AB9",
             "source": "http://mailchimp.com/about/brand-assets"
         },
+        {
+            "title": "Mail.Ru",
+            "hex": "168DE2",
+            "source": "https://corp.mail.ru/en/press/identity/"
+        },
         {
             "title": "MakerBot",
             "hex": "FF1E0D",

icons/mailru.svg

@@ -0,0 +1 @@
+<svg aria-labelledby="simpleicons-mailru-icon" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title id="simpleicons-mailru-icon">Mail.Ru icon</title><path d="M11.585 5.267c1.834 0 3.558.811 4.824 2.08v.004c0-.609.41-1.068.979-1.068h.145c.891 0 1.073.842 1.073 1.109l.005 9.475c-.063.621.64.941 1.029.543 1.521-1.564 3.342-8.038-.946-11.79-3.996-3.497-9.357-2.921-12.209-.955-3.031 2.091-4.971 6.718-3.086 11.064 2.054 4.74 7.931 6.152 11.424 4.744 1.769-.715 2.586 1.676.749 2.457-2.776 1.184-10.502 1.064-14.11-5.188C-.977 13.521-.847 6.093 5.62 2.245 10.567-.698 17.09.117 21.022 4.224c4.111 4.294 3.872 12.334-.139 15.461-1.816 1.42-4.516.037-4.498-2.031l-.019-.678c-1.265 1.256-2.948 1.988-4.782 1.988-3.625 0-6.813-3.189-6.813-6.812 0-3.659 3.189-6.885 6.814-6.885zm4.561 6.623c-.137-2.653-2.106-4.249-4.484-4.249h-.09c-2.745 0-4.268 2.159-4.268 4.61 0 2.747 1.842 4.481 4.256 4.481 2.693 0 4.464-1.973 4.592-4.306l-.006-.536z"/></svg>