include LICENSE in build, display in about tab

Also fixes last commit, user cache wasn't refreshed in ApplySettings, is
now.

Makefile

@@ -83,6 +83,7 @@ copy:
 	cp -r static/* data/web/
 	$(info copying language files)
 	cp -r lang data/
+	cp LICENSE data/
 
 internal-files:
 	python3 scripts/embed.py internal

api.go

@@ -1172,6 +1172,7 @@ func (app *appContext) ApplySettings(gc *gin.Context) {
 		policy = app.storage.profiles[req.Profile].Policy
 	} else if req.From == "user" {
 		applyingFrom = "user"
+		app.jf.CacheExpiry = time.Now()
 		user, status, err := app.jf.UserByID(req.ID, false)
 		if !(status == 200 || status == 204) || err != nil {
 			app.err.Printf("Failed to get user from Jellyfin (%d): %s", status, err)

html/admin.html

@@ -46,6 +46,7 @@
                 <p>{{ .strings.version }} <span class="code monospace">{{ .version }}</span></p>
                 <p>{{ .strings.commitNoun }} <span class="code monospace">{{ .commit }}</span></p>
                 <p><a href="https://github.com/hrfee/jfa-go/blob/main/LICENSE">Available under the MIT License.</a></p>
+                <pre class="monospace">{{ .license }}</pre>
             </div>
         </div>
         <div id="modal-modify-user" class="modal">

views.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"io/fs"
 	"net/http"
 	"strconv"
 	"strings"
@@ -68,6 +69,12 @@ func (app *appContext) AdminPage(gc *gin.Context) {
 	emailEnabled, _ := app.config.Section("invite_emails").Key("enabled").Bool()
 	notificationsEnabled, _ := app.config.Section("notifications").Key("enabled").Bool()
 	ombiEnabled := app.config.Section("ombi").Key("enabled").MustBool(false)
+	var license string
+	l, err := fs.ReadFile(localFS, "LICENSE")
+	if err != nil {
+		license = ""
+	}
+	license = string(l)
 	gcHTML(gc, http.StatusOK, "admin.html", gin.H{
 		"urlBase":         app.getURLBase(gc),
 		"cssClass":        app.cssClass,
@@ -82,6 +89,7 @@ func (app *appContext) AdminPage(gc *gin.Context) {
 		"quantityStrings": app.storage.lang.Admin[lang].QuantityStrings,
 		"language":        app.storage.lang.Admin[lang].JSON,
 		"langName":        lang,
+		"license":         license,
 	})
 }