Rename getLandingPage -> getLandingBody

This makes the naming scheme more consistent with other funcs.

Ref T565

admin.go

@@ -317,7 +317,7 @@ func handleViewAdminPage(app *App, u *User, w http.ResponseWriter, r *http.Reque
 		if err != nil {
 			return impart.HTTPError{http.StatusInternalServerError, fmt.Sprintf("Could not get banner: %v", err)}
 		}
-		p.Content, err = getLandingPage(app)
+		p.Content, err = getLandingBody(app)
 		p.Content.ID = "landing"
 	} else {
 		p.Content, err = app.db.GetDynamicContent(slug)

app.go

@@ -219,7 +219,7 @@ func handleViewHome(app *App, w http.ResponseWriter, r *http.Request) error {
 	}
 	p.Banner = template.HTML(applyMarkdown([]byte(banner.Content), ""))
 
-	content, err := getLandingPage(app)
+	content, err := getLandingBody(app)
 	if err != nil {
 		log.Error("unable to get landing content: %v", err)
 		return impart.HTTPError{http.StatusInternalServerError, fmt.Sprintf("Could not get content: %v", err)}

pages.go

@@ -96,7 +96,7 @@ func getLandingBanner(app *App) (*instanceContent, error) {
 	return c, nil
 }
 
-func getLandingPage(app *App) (*instanceContent, error) {
+func getLandingBody(app *App) (*instanceContent, error) {
 	c, err := app.db.GetDynamicContent("landing-body")
 	if err != nil {
 		return nil, err