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

Added page title to search result in remote interface

* master:
  extended some config options a bit, to make more clear what they do
  rearranged the config options

Conflicts:
	conf/dokuwiki.php
	lib/plugins/config/lang/en/lang.php
	lib/plugins/config/settings/config.metadata.php

We had a lot of options lumped together under "Advanced Settings". I
introduced two more categories and move a few options to other existing
categories.
I also reordered the appropriate entries in the source files to make it
easier to find stuff when extending the options.

* master: (382 commits)
  Romanian language update
  Marathi language update
  Arabic Language Update
  when there's not enough space for images, make sure they stay proportional (might be FS#2480)
  added minimal RTL print styles (part of FS#2185)
  moved plugins' rtl.css to their style.css counterpart (part of FS#2185)
  removed all browser-specific gradients as the recently (in 42ff6730) introduced svg makes them unnecessary
  removed comments from accidentally commented lines in tpl_includeFile()
  removed obsolete template file
  added tpl_includeFile() to core
  Make getTitle method in remote interface public
  Changed an error code in XML-RPC interface. This error hasn't anything to do with the rest of the -32600 errors.
  BG: language update
  Korean language update
  fixed performance issues with gradient in Firefox (which also added gradient support for IE9) (FS#2447)
  deleted very old (and unused) images
  added accidentally removed '<?php' back in (was in 57fc5edd)
  wrapped X-UA-Compatible meta tag with conditional comments
  added explanation to todo in _forms.css
  removed problematic 'overflow: hidden' from lists again ('unfixes' FS#1950)
  ...

Conflicts:
	inc/auth.php
	inc/load.php

The new default template "dokuwiki", a new era has begun

Thanks to Clarence Lee for the initial design, Anika Henke and Andreas Gohr for the hard work, Michael Hamann and Håkan Sandell for testing and many others for valuable feedback.

removed all browser-specific gradients as the recently (in 42ff6730) introduced svg makes them unnecessary

Make getTitle method in remote interface public

Changed one error code in XML-RPC interface

This error hasn't anything to do with the rest of the -32600 errors.

BG: language update