adding proper htaccess commands for Apache 2.4

[DeepDiver1975]

Fixes #5757

Generated content will look like this:

# Generated by ownCloud on 2013-11-08 09:32:48
# line below if for Apache 2.4 - please uncomment if you run Apache 2.4
# Require all denied

# line below if for Apache 2.2 - please remove it once you upgrade to Apache 2.4
deny from all

# section for Apache 2.2 and 2.4
IndexIgnore *

[ghost]

Test passed.
Refer to this link for build results: https://ci.owncloud.org/job/pull-request-analyser/1949/

[karlitschek]

Nice. 👍 not tested

[ghost]

Test passed.
Refer to this link for build results: https://ci.owncloud.org/job/pull-request-analyser/1959/

[bantu]

Also see http://tracker.phpbb.com/browse/PHPBB3-11860 / bantu/phpbb@phpbb:develop-olympus...bantu:ticket/11860

[bantu]

👍 This should be okay for protecting folders. Worst thing that can happen is Apache giving 500s instead of 403s for that folder.

[DeepDiver1975]

@karlitschek backport to stable5?

[karlitschek]

Not for now. We have to restrict back porting to really big problems otherwise we make oC 5 more unstable