This adds a useful debugging function for printing function call backtraces.

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This patch adds unit test files from the new release of JsStrip [1]. Some of the tests
currently fail pointing to bugs which are fixed in the new JsStrip release. The fixes
need to be ported to DokuWiki's js_compress function.

This patch also adds a way to output additional info when a test fails. It misuses
SimpleTest's signalling which is probably a bad idea but works for now.

http://code.google.com/p/jsstrip/

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Each renderer has to supply a getFormat() function returning the format it
produces. Usually this is the same as the classname of the renderer (or Plugin)
says but it does not need to be necessarily.

Fixes a problem with the wrong format being reported to plugins when a
render plugin was used.

darcs-hash:20070303214102-7ad00-3f87d8a10e94f4c6c30bacc8f43486b94ecdb146.gz

When a page was called with purge

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darcs-hash:20070303192836-7ad00-fe821c42ba7541f58ab52b9d8d11b3241bc90b65.gz

darcs-hash:20070302180103-7ad00-120a218d9fb7df3fe4d4884091fbd9e768549810.gz

darcs-hash:20070302102035-7ad00-65b1bcf0140b1aa434dc321b8e84b614f9b65e2f.gz

darcs-hash:20070302100506-19e2d-342a0477340aa6b2c5fb7e08c520053b7dc33608.gz

This saves a lot of ACL lines for users namespaces for example:

users:*               @ALL        1
users:@USER@          @USER@      8

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darcs-hash:20070226180035-7ad00-c73a6af59b915e2930c6f56a23d374478a63f87d.gz

darcs-hash:20070226175529-7ad00-4d3d984da1edbf2ded546cfbd7374f97f032d032.gz

Missing danish translation strings and files

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Following the problem with IE's mimetype handling described at
http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting
this patch adds a new option (on by default) to check the first 256
bytes of uploaded files against a list of a few HTML tags and denies
the upload of such a file. In rare occasions this may block harmless
and valid files, but that's price we have to pay for Microsoft's
stupidity.

Users who need HTML uploads should disable this check. (Don't do that on
open Wikis!)

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darcs-hash:20070224122418-7ad00-df595caf9d861bc6b4e5bf2d478df890b6f5bf7a.gz

darcs-hash:20070224120324-7ad00-4eeedea2685232e0f52f0a374c32e8ce6b17a9c2.gz

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darcs-hash:20070224112634-ce218-6f895b09dfe7abb5b8c19ea592f5849e02be4d4e.gz

darcs-hash:20070221133007-ce218-844345922ee66ce33c3f0969b5fc6d643ac618ce.gz

see http://www.freelists.org/archives/dokuwiki/02-2007/msg00207.html from Todd Augsburger

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