Reworked CSS

- Split into 4 files referenced by the first
- Using MLFE and page-wide color definitions
- Improved consistency and reduced markup complexity
- Hinted more user actions
- Improved visual parsability of tables and logs
- Improved visibility of counter units
- TODO:
  - Add text selection to important fields
  - Improve button placement
  - Reindent templates

tmpl/library.tmpl

@@ -1,6 +1,6 @@
 {{template "head"}}
 <h2>Library {{.Library.Name}}</h2>
-<p>Enabled {{.Library.Enable}}
+<p>{{if .Library.Enable}}Enabled{{else}}Disabled{{end}}</p>
 <h2>Files</h2>
 <form method="POST" action="/scan/{{.Library.ID}}">
     <input value="Scan" type="submit">