Rework typescript to use modules

web UI now uses modules, and relies less on bodge to make things work.
Also fixes an issue where invites where "failed to send to xx" appeared
in invite form.

api.go

@@ -626,12 +626,12 @@ func (app *appContext) DeleteProfile(gc *gin.Context) {
 // @tags Invites
 func (app *appContext) GetInvites(gc *gin.Context) {
 	app.debug.Println("Invites requested")
-	current_time := time.Now()
+	currentTime := time.Now()
 	app.storage.loadInvites()
 	app.checkInvites()
 	var invites []inviteDTO
 	for code, inv := range app.storage.invites {
-		_, _, days, hours, minutes, _ := timeDiff(inv.ValidTill, current_time)
+		_, _, days, hours, minutes, _ := timeDiff(inv.ValidTill, currentTime)
 		invite := inviteDTO{
 			Code:    code,
 			Days:    days,