Make constants in TarLib.class.php class constants

The constants are required by the class constructor, which effectively
means before the autoloader is triggered. This change fixes that issue.

Various JavaScript fixes

* Syntax error fixed
* lock refresh event is now attached to the whole edit form since it bubbles
up and we cannot be sure that the wikitext input exists on all edit

Various JavaScript fixes

* Syntax error fixed
* lock refresh event is now attached to the whole edit form since it bubbles
up and we cannot be sure that the wikitext input exists on all edit forms
* Updated findPos(X|Y)
* Easier and less error-prone way of getting the section edit button in the
highlight mouseover event handler

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removed dead leftover code from media search

Move & rename HTML_PAGE_FROMTEMPLATE to common.php

The new COMMON_PAGE_FROMTEMPLATE is triggered by pageTemplate AFTER the template
has been read but before performing the template replacements.

Introduce toolbar buttons for headers and stuff

Append linkwizard directly to the edit form

Allow filtering of block buttons in initToolbar

Galician language update

French language update

Czech language update

Latvian language update

removed cursor:hand CSS property FS#1911

Albanian translation added

Fix pageX and pageY in IE’s JS events

Provide ›original size‹ media insertion

Rewrite mediamanager options’ JavaScript, new icons

images for media popup

extended mediamanager options

changed license button colors again

partly reverts previous patches to keep matching styles with other
DokuWiki buttons

added dokuwiki.search XMLRPC call FS#1882

honor sneaky_index config in link manager FS#1907

adjusted CC-PD and GFDL buttons to match other CC buttons

Update license GFDL and added CC0

Russian language update

Esperanto language update