Rework to use golang 1.16 embed package instead of go-bindata. Rework templates to be less insane

web/data/index.html

@@ -0,0 +1,12 @@
+{{ define "content" }}
+ <main role="main" class="inner DAU">
+   <h1 class="DAU-heading">Discord Auto Upload</h1>
+   <p class="lead">Hey look, it's DAU :-)</p>
+   <p class="lead">
+     <a href="https://github.com/tardisx/discord-auto-upload" class="btn btn-lg btn-secondary" target="_blank">Learn more</a>
+   </p>
+ </main>
+{{ end }}
+
+{{ define "js" }}
+{{ end }}