squashed a whole bunch of PRs

closes #1907
closes #1908
closes #1909
closes #1910
closes #1911
closes #1912
closes #1913
closes #1914
closes #1915
closes #1916
closes #1917
closes #1918
closes #1919
closes #1920
closes #1921
closes #1922

manager / Synchronize terms in de and de-informal

The refshow configuration option wasn't used as described anymore
already in the latest release and after the introduction of the media
usage index the parameter is also no longer relevant for internal
optimization. The only place where it was still used is the no longer
used search_references()-function which is removed here, too.

The refshow configuration option wasn't used as described anymore
already in the latest release and after the introduction of the media
usage index the parameter is also no longer relevant for internal
optimization. The only place where it was still used is the no longer
used search_references()-function which is removed here, too.

Ignore-this: 1f61607c4279b01349e1a6fd2919cc0

darcs-hash:20091201183307-c0fd0-629e094093ef16f299749d9fd7db412120809e13.gz

Ignore-this: 59e6f832b1b8da77c45c332b8ade8538

darcs-hash:20090507163952-6bf33-4056b5f046acf4817f8d30d7a95cbfcb0b4c87da.gz

Ignore-this: 27d25dde73f24167077fd30550181efc

darcs-hash:20090128151801-dc188-3ba6dc9916a664db87ca990216d384ba68125888.gz

darcs-hash:20081201212346-23886-81f2bc6c2c021b3f1e9c7367d8ffbab12700e379.gz

The official wiki is now at www.dokuwiki.org

darcs-hash:20080810173029-7ad00-fbd35921ff3c2c5557f33750bedd4553b0abdd70.gz

darcs-hash:20080713165852-7ad00-ab0f56fdac2554c967b8f53bec69807188e1ec7e.gz

darcs-hash:20080314153420-7ad00-2f972c284034d5371944cdd7fd8de6cf8de58f35.gz

This patch replaces the use of the date() function with the strftime()
function. The latter will respect a set locale and will use localized
strings for things like month names.

Because the format options for strftime differ from the ones used in date,
DokuWiki will rest the value of $conf['dformat'] if it contains an old
date format string (detected by missing % characters).

Plugins or templates using the $conf['dformat'] need to be updated.

darcs-hash:20080223124045-7ad00-6afb2b839afc58781463e25577e06adb675fff79.gz

darcs-hash:20080122185140-7ad00-0ff0feaa401db1fb01880c4b323b0019d2663fe1.gz

With spell checkers available in all modern browsers, having a spell checker in
DokuWiki's core code is no longer necessary. This patch removes the spell
checking feature. It will be made available as optional plugin.

darcs-hash:20071123125840-7ad00-faf7aa4673421dbb3fad904ba5b46b4927a5176d.gz

darcs-hash:20070715090528-7ad00-ffebbfcd0e4b12e839a958932afd1db2c4fb8765.gz

darcs-hash:20070629134741-7ad00-0ff9213ccdc79cc288af35a4dd98c1f7f90a5137.gz

Cache
- add dependency for metadata renderer file
- check metadata for end of page life, "date valid end".

Metadata Renderer
- RSS syntax mode now sets rendered page expiry, "date valid end"
  and includes the feed URL in "relation haspart".

Purgefile
For all wiki installations the purgefile records the earliest
time before which no cache purge (based on data consistency)
is required. Cache files older than this time MAY need to be
purged.
- remove purgeonadd configuration setting

darcs-hash:20060924202157-9b6ab-4531e91411c41914eeab2b6a8160c3d46b001cee.gz

darcs-hash:20060608085236-9be09-3142ff6fd2a13cd03205a6703b3fd22bddf5e078.gz