Replace SimpleTest with PHPUnit

Input iteration counts are squared in the function and passing something
above 30 is giving integer overflows on 32 bit systems (and causes insane
iteration counts on 64bit systems).

according to Dominik Eckelmann  one of the tests fails on certain servers. I can't
reproduce it. If you can, please open a bug report with as much info as
possible.

this fixes the HTTP tests which do test the base class directly instead
of the DokuHTTPClient subclass

* master:
  added option to disable reverse DNS lookups

The test can be skipped by excluding the "slow" group.

removed unneeded data files, converted tabs to spaces

This didn't really need runkit. The way runkit was used didn't add any
more credibility to the test result

* master: (29 commits)
  some edge case checking in search result highlighting
  Resolve empty page ID to configured start page
  Added more detail error code for unauthorized calls in xmlrpc interface.
  changed internal Mailer members from private to protected
  made it possible to disable HTML mails in the config
  removed commented code left from the quoted_printable days
  add missing table tags for HTML diff mails
  fixed subscriber mail signatures
  use real HRs in HTML mails
  Add various headers to the mails FS#2247. pull request #83 closed
  removed footer image from HTML mails
  use inlinestyles for diffs in HTML mails
  fixed signature stripping
  fixed mailprefix handling
  fixed missing replacement for HTML notify mails
  allow image embeds in HTML mail templates
  Added HTML wrapper for mails
  allow non-txt extensions when accessing locales
  added Mailer class to autoloader
  Replaced mail_send calls with new Mailer class
  ...

Remote interface improvements

* htmlmail: (26 commits)
  changed internal Mailer members from private to protected
  made it possible to disable HTML mails in the config
  removed commented code left from the quoted_printable days
  add missing table tags for HTML diff mails
  fixed subscriber mail signatures
  use real HRs in HTML mails
  Add various headers to the mails FS#2247. pull request #83 closed
  removed footer image from HTML mails
  use inlinestyles for diffs in HTML mails
  fixed signature stripping
  fixed mailprefix handling
  fixed missing replacement for HTML notify mails
  allow image embeds in HTML mail templates
  Added HTML wrapper for mails
  allow non-txt extensions when accessing locales
  added Mailer class to autoloader
  Replaced mail_send calls with new Mailer class
  Make use of new Mailer class in notify()
  Copy all text replacements to HTML replacements in Mailer
  Added setBody() to Mailer class
  ...

The error message when a non-existant editor was tried to load wasn't
escaped correctly, allowing to introduce arbitrary JavaScript to the
output, leading to a XSS vulnerability.

Note: the reported second XCRF vulnerability is the same bug, the xploit
code simply uses JavaScript to extract a valid CSRF token from the site

https://github.com/splitbrain/dokuwiki/pull/96#issuecomment-5195756