UI: Restore Open Sans as default font

app/Resources/public/css/base.css

@@ -11,12 +11,38 @@
 */
 /* Sticky footer styles
 -------------------------------------------------- */
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 300;
+    src: local('Open Sans Light'), local('OpenSans-Light'), url(themes/chamilo/fonts/OpenSans-Light.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans-Light.woff) format('woff');
+}
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 400;
+    src: local('Open Sans'), local('OpenSans'), url(themes/chamilo/fonts/OpenSans.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans.woff) format('woff');
+}
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 600;
+    src: local('Open Sans Semibold'), local('OpenSans-Semibold'), url(themes/chamilo/fonts/OpenSans-Semibold.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans-Semibold.woff) format('woff');
+}
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 700;
+    src: local('Open Sans Bold'), local('OpenSans-Bold'), url(themes/chamilo/fonts/OpenSans-Bold.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans-Bold.woff) format('woff');
+}
+
 html {
     background-color: #FFF;
     position: relative;
     min-height: 100%;
 }
 body {
+    font-family: 'Open Sans', sans-serif;
     /* Margin bottom by footer height */
     margin-bottom: 60px;
 }

app/Resources/public/css/document.css

@@ -5,6 +5,31 @@ This stylesheet must import editor_content.css file
 */
 @import url(./editor_content.css);
 
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 300;
+    src: local('Open Sans Light'), local('OpenSans-Light'), url(themes/chamilo/fonts/OpenSans-Light.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans-Light.woff) format('woff');
+}
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 400;
+    src: local('Open Sans'), local('OpenSans'), url(themes/chamilo/fonts/OpenSans.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans.woff) format('woff');
+}
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 600;
+    src: local('Open Sans Semibold'), local('OpenSans-Semibold'), url(themes/chamilo/fonts/OpenSans-Semibold.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans-Semibold.woff) format('woff');
+}
+@font-face {
+    font-family: 'Open Sans';
+    font-style: normal;
+    font-weight: 700;
+    src: local('Open Sans Bold'), local('OpenSans-Bold'), url(themes/chamilo/fonts/OpenSans-Bold.woff2) format('woff2'), url(themes/chamilo/fonts/OpenSans-Bold.woff) format('woff');
+}
+
 body {
     color: #666;
     font-family: 'Open Sans', sans-serif;