* do not use stopwords in fulltext search
apparentyl there is a bug in innodb where including stopwords in a search causes the lookup to fail entirely.
e.g. innodb_ft_enable_stopword must be disabled when the index is edited (rows are added/removed)
* don't create a MATCH AGAINST search from empty search strings after sanitization
* drop fulltext indizes for locale zhCN
logographic languages need special treatment, which handling may differ by db provider
* use LIKE search by default for locale zhCN. Added config option to use fulltext if supported by db.
* add more indizes to large tables for cols used in lookups
* drop multi-column indizes on spell as they are not utilized by mysql
* add and use fulltext indizes for names of items, spells, quests, creatures & objects
could add more, but is it really necessary?
* limitations
- still need a solution for race/class/spellFamily masks cols that are used as such
- fulltext indizes in boolean mode cant partial match the end of a word.
reverse name cols and search and match back to front like that..? blows up db size even more though
(+trike* : "stormstrike" => +ekirt* : "ekirtsmrots")
* group options for: currency, factions, itemcurrency & zones
* update faction setup so faction "The Frostorn" are available and it does not rely on factiontemplate.dbc
* fix broken purchasablewith* localization in locale DE
* move checks to __construct so they can be run on $_POST data
and don't create malformed filter urls
* if we received malformed $_GET params, build new params and reload
* do not store error state in cache
* cleanup
* modernize DB-Types
- long term: should be split in class that describes the DB-Type and container class that handles multiples
* make unchanging filter props static, allow lookup of criteria indizes through filter
* move username/mail/password checks to util and make them usable as input filter
