Embedded Trykker font

[nicknezis]

Fixes #3540 by embedding the Trykker fonts as directed on this Google webfonts helper app.

[nicknezis]

There is also an option to support only Modern browsers:

/* trykker-regular - latin-ext_latin */
@font-face {
  font-family: 'Trykker';
  font-style: normal;
  font-weight: 400;
  src: local('Trykker Regular'), local('Trykker-Regular'),
       url('../fonts/trykker-v8-latin-ext_latin-regular.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
       url('../fonts/trykker-v8-latin-ext_latin-regular.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
}

I opted for the more generic default:

@font-face {
  font-family: 'Trykker';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/trykker-v8-latin-ext_latin-regular.eot'); /* IE9 Compat Modes */
  src: local('Trykker Regular'), local('Trykker-Regular'),
       url('../fonts/trykker-v8-latin-ext_latin-regular.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
       url('../fonts/trykker-v8-latin-ext_latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
       url('../fonts/trykker-v8-latin-ext_latin-regular.woff') format('woff'), /* Modern Browsers */
       url('../fonts/trykker-v8-latin-ext_latin-regular.ttf') format('truetype'), /* Safari, Android, iOS */
       url('../fonts/trykker-v8-latin-ext_latin-regular.svg#Trykker') format('svg'); /* Legacy iOS */
}

This adds more font formats to the distribution which slightly increases the size, but it might better support older browsers. I'm happy to change the logic to only support newer browsers if you think that would be best.