Merge pull request #8334 from owncloud/protect-co

Preventing access to the config folder

config/.htaccess

+# line below if for Apache 2.4
+<ifModule mod_authz_core>
+Require all denied
+</ifModule>
+
+# line below if for Apache 2.2
+<ifModule !mod_authz_core>
+deny from all
+</ifModule>
+
+# section for Apache 2.2 and 2.4
+IndexIgnore *