rework of .post-template .summer-post-content and delete of .summer-author*
rework of .post-template .summer-post-content and delete of .summer-author*

grumpycatt/grav-skeleton-notepad-site,grumpycatt/morningopenstack-grav-skeleton,grumpycatt/grav-skeleton-notepad-site,grumpycatt/morningopenstack-grav-skeleton,grumpycatt/grav-skeleton-notepad-site,grumpycatt/morningopenstack-grav-skeleton