Extract SQL composition into a query builder

Add advanced search filter

Search for any of the tags by default

Add tests

Version upped

do never use wildcards when clicking tags. fixes #52

When the wiki is configured to do wildcard searches by default (using
the search_fragment configuration, clicks on tags should still searched
as

do never use wildcards when clicking tags. fixes #52

When the wiki is configured to do wildcard searches by default (using
the search_fragment configuration, clicks on tags should still searched
as exact matches. Actual wildcard support for tag searches is introduced
in #54

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Consistently use * for wildcards/globbing

DokuWiki uses * and SQlite handles it well with the GLOB operator

Version upped

Remove redundant db query

Update tags when move plugin has moved a page

Version upped

Place tag search results in their own section

Tag search results used to be inserted before page name results, but below the corresponding headline

Added {{tagging::tag>tagname}} to show all pages with a specific tag

Version upped

shorter german text

better tag admin toggle wording

Still not perfect, but a little better maybe.

larger tag input area

fix weird background for admin edit checkbox

translation update

Version upped

better german translation. fixes #21

be more resilent to search output #45

Tags may match when nothing else matches.

return tags as array

As discussed on https://github.com/cosmocode/tagging/pull/46#discussion_r226819085

cleanup, no functionality changes

✨ Add helper function to get all pages with tags and their tags