change to use natural order sorting

ensure parameter is passed down during recursion

add documentation for sort parameter, change false to 'natural'

sp.

update pattern to catch more html entities

Fix set_doku_pref cookie date and value

fixed setting cookie not working

store choices for recent changes and diff views in cookie (FS#2438 and
FS#2700)

Note: These changes don't work yet. The cookie is not set and deletes the old
one.

fix for FS#2676, inserting zero length spaces into long sequences of non-breaking characters in diffs

Implement media subscriptions in the new subscription class

Add threading headers to change notification mails as proposed in PR #120

added SHA512 hashing method FS#2663

allow varying salt length in password hasher

added mediawiki password method FS#2559

This should make migrating from MediaWiki a bit easier.

Indexer: abort page rename if deletion of new id fails

Indexer: added internal deletePageNoLock method

The new deletePageNoLock method is used by renamePage and avoids that
the index needs to be unlocked and locked again for deleting the page.

Clarified the behavior of the Doku_Indexer::renamePage method

link directly to subscription management in mails

This was updated in the english translation a while ago, but was still
missing in some translations

only use mailfromnobody for bulk mails

added missing context for list mails

fix custom editor loading

Custom editors can also be loaded when not a section is given. For
example this happens on a preview click where the page is already
separated into pre, suf and text.

Revert "handle bzip1 as well"

This reverts commit f2cb3ec76dec3fe2b40f25765ef842223c7132fe.

Turns out I was too fast merging this. I can't get PHP's bzip handler to
handle a bzip1 compressed file.

handle bzip1 as well

in fact .tbz is tar.bz (bzip1) and .tbz2 is what tar.bz2 is used
commonly.

fixes from bee9f377bc547c99fe99b4e38199cb92cf668554 commit notes

Increment DOKU_API_VERSION

Because wiki.getAttachments now returns 'perms' instead of 'perm'