Skip undefined schemas

Fixes GitHub #107 and Jira SPR-503

Check schema_assignments.tbl in aggregation

This check has most likely just been forgotten.

SPR-450

Fix sorting by a multi column

A multicolumn is always sorted by its first value which is already copied
to the respective column in the table.

SPR-466

Use DokuWiki new autoloader for class files

No longer do we need to register our own autoloader. Namespace had to be
vendor prefixed.

fixed grouping in search

removed distinct feature from search

this was added for tag autocompletion but does not work as expected.
should be implemented in tag type directly

check for page existance in search. fixes #77

This requires an uptodate sqlite plugin

print stacktrace on allow debug

no special handling for multi vals on sorting. fixes #61

since we have a copy of the first value now, we can simply sort by the
single value column. This will only work for data saved from now on.

moved the filter reducing to Search

major refactoring of the whole table aggregation

this is still completely untested

make dynamic parameters a bit better to handle

Now the aggregation class no longer needs to juggle around with ugly
strings but can simply call functions on the SearchConfigParameter class
to genera

make dynamic parameters a bit better to handle

Now the aggregation class no longer needs to juggle around with ugly
strings but can simply call functions on the SearchConfigParameter class
to generate new parameters.

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new option to select distinct data through search

this is useful for aggregating exisitng data regardless of page context

filters need to be their own group in the SQL

make sure search only returns assigned schema data

fixed a bunch of minor things found by IntelliJ Idea

default to translated column labels in table aggregation

This also fixes errors that where thrown when headers were not
specified.

check access level in search. related to #23

Only readable pages should be returned by a search.

Split function call to remove PHP Strict warnings

Replace * with % in filters

SPR-309, SPR-317. GitHub: #21

Fix <>, !~, and *~ comps to data behaviour but simpler

SPR-317, SPR-309, GitHub: #21, #22

Add *~ and = comp and adjust to data functionality

Render output tables with data-like syntax

ToDo: summarize

introduced Value class

This class holds the value of a single cell and a reference to the
column.

added Page type and use it for the %pageid% special column