Add settings page linking to clean and clear

http/admin.go

@@ -34,6 +34,18 @@ func (h *Handler) clearDatabase(c *gin.Context) {
 	c.HTML(http.StatusOK, "admin.html", d)
 }
 
+type SettingsData struct {
+	AlwaysNeededData
+}
+
+func (h *Handler) settings(c *gin.Context) {
+	d := SettingsData{
+		c.MustGet("data").(AlwaysNeededData),
+	}
+
+	c.HTML(http.StatusOK, "settings.html", d)
+}
+
 func (h *Handler) clearBudget(c *gin.Context) {
 	budgetID := c.Param("budgetid")
 	budgetUUID, err := uuid.Parse(budgetID)