make sure loaded text has the right encoding

When pages contain non-UTF8 chars (eg. when posted through a script or
when edited on the filesystem, parts of DokuWiki can break resulting in
missing page content. This fixes these problems by forcing the content
to UTF-8 on load. This will result in bad characters for input that is
not latin1 but contents will at least be visible.
removed superfluous parameter FS#2773
fixed exception call FS#2772
don't pass unused variable in doku.php FS#2774
Czech language update
Japanese language update
Indexer: Fix wrong suffix parameter

The suffix parameter is only for the word length in the word index and
not for the metadata index.
Indexer: Remove broken and dead readdircache code FS#2771

The code that is removed in this commit has either never been used
(listIndexLenghts) or was completely broken (cacheIndexDir) and was
introduced in the indexer rewrite in 2010. The idea of the rewrite was
to update the readdir cache after every index change instead of on demand.
What the code actually did was removing every updated index from the
cache as it used a wrong if condition. Simply fixing the condition
wouldn't fix the problem as then only updated indexes would be added to
the cache and furthermore the rewrite simply ignored the readdircache
setting. For now the safest solution seems to be removing the code. It
could be added again in a changed form in a future version.
add some tests for ml()
ensure security token is included in media url when resize parameter is passed in string form, e.g. 'w=80'
Merge pull request #218 from splitbrain/FS#2767

FS#2767, fix for missing security token
fixed test name
updated dates in templates' and plugins' info.txt files
tar library: another fix for lone zero blocks
added missing test case files
Release preparation
fixed space of list points beside a floating image
Revert "fixed space of list points beside a floating image"

This reverts commit 37764cbb34237da3c96bab21102e44ffe2715cd9.
Fix wrong config key in deprecated auth message
Merge branch 'master' of github.com:splitbrain/dokuwiki