more elements and work on the legacy support

started with the compatibility layer

added a first few tests.

this is far from comprehensible, but should give an idea how the new
library works and how to write tests

added autoloading for namespaced classes

start of rewriting the form handling

This is jsut a small beginning. Not all elements are there, yet. It's
also completely untested so far.

urlencode t param value in css and js calls

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Fix scrutinizer issues with auth

Add io_replaceInFile

Deleting lines works with BZ2 files.

Append to BZip2 files. Unit tests for writing files.

2y is also used for bcryt

Report more meaningful errors when an auth backend fails. closes #1093

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cache JavaScript per template

make it possible to remove entries from DOKU_PREFS cookie

Revert "use nav+ul element for "you are here""

This reverts commit 3940c519db432ec22e8c587504d86191631f9bfb as
discussed in #1082.

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Adding Arabic Stopwords

Adding Arabic stopwords and keeping Engish stopwords as well, since most of the Arabic wikis contain a lot of English words.

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Update register.txt (Arabic) - Fix spilling mistake

Add deprecated tag to mail_send, _mail_send_action, mail_encode_address

These functions are already deprecated and replaced by the Mailer::
class. The deprecated tag was simply missing.

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