Completely match the new Supervisor log timestamp format (#110)

With the recent change which added milliseconds to the timestamp the
timestamp removal regex used in the landing page frontend did not
completely remove the timestamp anymore. This also lead to log level not
match correctly, and hence loss of log coloring.

Correctly match the log timestamp.

See also: home-assistant/supervisor#4954

rootfs/usr/share/www/static/scripts.js

@@ -87,7 +87,7 @@ function fetchLogs() {
         }
         var scrolledDown = logElement.scrollTop + logElement.clientHeight === logElement.scrollHeight;
         logElement.innerHTML = text
-          .replace(/^[\[\d \-:\]]*/gm, "")
+          .replace(/^[\[\d \-:.\]]*/gm, "")
           .replace(/^(INFO|WARNING|ERROR)\s\(\w+\)\s(.*)\n/gm, "<span class='$1'>$2</span>\n")
         if (scrolledDown) {
           // Scroll content down if it was already scrolled down