FIx roomsublist heights.

- also fiddles the font size numbers

src/utils/units.ts

@@ -0,0 +1,27 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/* Simple utils for formatting style values
+ */
+
+// converts a pixel value to rem.
+export function toRem(pixelValue: number): string {
+    return pixelValue / 15 + "rem";
+}
+
+export function toPx(pixelValue: number): string {
+    return pixelValue + "px";
+}