config: rename files to better hint at what they’re used for

handlers/about.go

@@ -14,9 +14,9 @@ func AboutHandler(app *App) http.HandlerFunc {
         loggedIn := session.Values["user_id"] != nil
         cookie, _ := r.Cookie("threadr_cookie_banner")
 
-        aboutContent, err := ioutil.ReadFile("config/about.template")
+        aboutContent, err := ioutil.ReadFile("config/about_page.htmlbody")
         if err != nil {
-            log.Printf("Error reading about.template: %v", err)
+            log.Printf("Error reading about_page.htmlbody: %v", err)
             http.Error(w, "Internal Server Error", http.StatusInternalServerError)
             return
         }