Show if a new version is available in the web interface

web/data/wrapper.tmpl

@@ -42,6 +42,10 @@
        <a class="nav-link {{ if eq .Path "config.html"}} active {{ end }}" href="/config.html">Config</a>
        <a class="nav-link {{ if eq .Path "uploads.html"}} active {{ end }}" href="/uploads.html">Uploads</a>
        <a class="nav-link {{ if eq .Path "logs.html"}} active {{ end }}" href="/logs.html">Logs</a>
+       {{ if eq .NewVersionAvailable true }}
+       <a class="nav-link" href="{{ .NewVersionInfo.HTMLURL }}">Ver {{ .NewVersionInfo.TagName }} available!</a>
+       {{ end }}
+
      </nav>
    </div>
  </header>

web/server.go

@@ -74,12 +74,16 @@ func (ws *WebService) getStatic(w http.ResponseWriter, r *http.Request) {
 		}
 
 		var b struct {
-			Body    string
-			Path    string
-			Version string
+			Body                string
+			Path                string
+			Version             string
+			NewVersionAvailable bool
+			NewVersionInfo      version.GithubRelease
 		}
 		b.Path = path
 		b.Version = version.CurrentVersion
+		b.NewVersionAvailable = version.UpdateAvailable()
+		b.NewVersionInfo = version.LatestVersionInfo
 
 		err = t.ExecuteTemplate(w, "layout", b)
 		if err != nil {