Show only tags by auto-user in single user mode

This also fixes some undeletable tags and shows all tags in the same
Size if they were entered prior to single-user-mode by multiple persons.

WIKI-157

Version upped

fixed acl check

Version upped

Version upped

Remove duplicate isHidden check

as suggested by @Klap-in.

This check is already part of GETACCESLEVEL as defined in helper.php of
the sqlite plugin.

Version upped

Adjust method signatures to match parent

Create settings.php

Create lang.php

Create intro.txt

Move Check to SQL-Query to respect LIMIT

upped version

Escape $tag in headline

Show tag in search results title

Possible issue: The korean translation may now be out of date.

Fix Layout to prevent missing linebreak

Use quotes for tags with underscores and minus

Not only spaces, but also underscores and minus are treated as
separation characters by the search/the tagging plugin. However they are
not affected by

Use quotes for tags with underscores and minus

Not only spaces, but also underscores and minus are treated as
separation characters by the search/the tagging plugin. However they are
not affected by the utf8_stripspecials in
helper_plugin_tagging::getTagSearchURL
Hence they should be removed during cleaning.

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Check search results against $conf['hidepages'] and ACL

Before returning search results in findItems() inside helper.php, check against $conf['hidepages'] and ACL.

Use correct $ID when creating the result-links

Do not show tagged pages from namespaces excluded in search

Only add a colon if it is not already there

fixed input syntax

upped version

fixed renaming tags

upped version