introduce getColName vs. getFullColName

store page titles in DB for reference

All page titles are now stored in the database to reference them later
in queries for the page type.

rename $type to $op to avoid confusion about what a type is

use generic where in Search

make generic where() available to use

this makes it easier to pass the logic operator dynamically

code style adjustment, no single line exceptions

use the query builder in Search

Tests still run through, so it seems to be correct so far

Treat 0 as a nonempty column

added group and sort by

fix and test placeholder replacement

tests for where

test that left joins are positioned correctly

first go at query builder

do not show a result table if there are no results

There is no sense in showing headers, dynamic filters, pagination and a
sum row when there are absolutely no results. This change omits the
whole s

do not show a result table if there are no results

There is no sense in showing headers, dynamic filters, pagination and a
sum row when there are absolutely no results. This change omits the
whole shebang if there are no results (except when the table is
dynamically filtered and the empty set might be a result of that filter)

show more ...

Do not show rows in aggregations if they're empty

SPR-541

reverted bad change caused by outdated IDEA index

idea marked the false as an undefined parameter - turns out it was
wrong.

first go at regexp filters

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.

fix validation and multi vlaue handling in bureaucracy #87

tests for schema deletion

Added way to delete a schema and all its data

reuse column's type renderer to output sums

This makes sure that sums will apply the same formatting as the values
they summarize.