Remove Google web fonts

static/css/custom-variables.less

@@ -11,7 +11,8 @@
 @el-page-header-color: #8B0000;
 
 @font-family-monospace: Roboto, Menlo, Monaco, Consolas, "Courier New", monospace;
-@font-family-sans-serif:  'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+@font-family-sans-serif:  'Helvetica Neue', Helvetica, Arial, Sans-Serif;
+@font-family-serif: 'PT Serif', Georgia, 'Times New Roman', Times, Serif;
 @grid-float-breakpoint: @screen-md-min;
-@headings-font-family: Lora, Baskerville, Garamond, Georgia, 'DejaVu Serif', 'Times New Roman', Times, Serif;
+@headings-font-family: Baskerville, Garamond, Georgia, 'DejaVu Serif', 'Times New Roman', Times, Serif;
 @page-header-border-color: #8f8686;

static/css/elegant.less

@@ -2,10 +2,6 @@
 @import "../bootstrap/less/utilities.less";
 @import "custom-variables.less";
 
-@import url(http://fonts.googleapis.com/css?family=Open+Sans);
-@import url(http://fonts.googleapis.com/css?family=Roboto);
-@import url(http://fonts.googleapis.com/css?family=Lora);
-
 .mixin-no-color-no-decoration() {
     color: inherit;
     text-decoration: none;