Translation update (sv)

doc fix

* results can be sorted by wanted or origin
* second dimension can be skipped
* results should be easier to parse with standard unix tools now
* use proper otpions, not commands

* 'master' of git://github.com/turnermm/dokuwiki:
  using $options->getCmd to retrieve show-pages parameter
  added option to wantedpages.php to show or not show pages where broken links occur
  show pages where broken links occur: page_id => broken_link

Create valid empty option in tpl_actiondropdown

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.

The HTML-spec[0] specifies:

> If the element has no label attribute and is not a child of a datalist element: Text that is not inter-element whitespace.

So a non-breaking space is valid solution.

[0] https://html.spec.whatwg.org/multipage/form-elements.html#the-option-element

Translation update (fr)

Translation update (sr)

Translation update (sr)

Translation update (sr)

Translation update (de-informal)

Translation update (de-informal)

Translation update (pt)

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

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

Update html.php

$regex initialization added to clearify that it is passed by reference and filled from subroutines

When a page is marked as hidden (through the hidepages option) it should
not be indexed by search engines.