readd significant space

this got lost in a previous update

fix(config): empty string is valid for numericopt

There was a bug that the empty string was considered to be invalid if
also a max or min value was defined for a config field of type
numericopt.

do not create unecessary references for single use objects

Removed progressbar from searchform

translation update

Make default encapsulation more readable and less duplicate.

Replace htmlspecialchars to hsc in core

Add the preview-bool for the cache file.

#2021 broken links to W3C validators
also dokuwiki and php are on https

extracted functions
added test coverage

Fix PHP Notices: Reduce error log noise

While DokuWiki suppresses PHP Notices they are still a code smell and
should be fixed. This fixes some PHP Notices that occurred.

Some of these fixes could b

Fix PHP Notices: Reduce error log noise

While DokuWiki suppresses PHP Notices they are still a code smell and
should be fixed. This fixes some PHP Notices that occurred.

Some of these fixes could be refactored into nicer code once we move to
PHP 7 and get access to the `??` operator.

show more ...

allow tests against ajax requests

translation update

translation update

clean extension names. fixes #2042

This makes sure the provided extension ID is a valid id before
initializing it in the extension manager.

translation update

translation update

simplify ajax call handling

No need to check those seperately. The correct order should be ensured
already.

filter special chars from ajax call parameter. fixes #2019

translation update

translation update

translation update

translation update

translation update

Added support for additional geshi options using an extendable options array.