Switched from LESS to SASS

src/static/pretixbase/scss/cachedfiles.scss

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+@import "../../bootstrap/scss/_bootstrap.scss";
+$fa-font-path: static("fontawesome/fonts");
+@import "../../fontawesome/scss/font-awesome.scss";
+@import "colors.scss";
+
+
+body {
+    background: #ececec;
+    text-align: center;
+    padding: 50px 0;
+}
+
+.big-animated-icon {
+    -webkit-animation: fa-spin 8s infinite linear;
+    animation: fa-spin 8s infinite linear;
+    font-size: 200px;
+    color: $brand-primary;
+}

src/static/pretixbase/scss/colors.scss

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+$brand-primary: #8E44B3;

src/static/pretixbase/scss/error.scss

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+@import "../../bootstrap/scss/_bootstrap.scss";
+$fa-font-path: static("fontawesome/fonts");
+@import "../../fontawesome/scss/font-awesome.scss";
+@import "colors.scss";
+
+
+body {
+    background: #ececec;
+    text-align: center;
+    padding: 50px 0;
+}
+
+.big-icon {
+    font-size: 200px;
+    color: $brand-primary;
+}