* skip out of List construction if realms are empty or do not match preselection
* also prefilter Guilds and Prolfiles Lists for server or region (unless custom profiles)
* discard ProfileList entries for inaccessible realms
* test arrays first before use, not the other way round
* do not try to init local arena team entries if there are no entries in list.
* fix equally distributing chars/guilds/arenateams across realms for unlimited (0) lists
* fix double declaration of realms in ArenateamList
* update spell attribute descriptions primary from TC, secondary from Wowdev Wiki (not guaranteed to be correct for 335)
* show all attributes on SpellDetailPage
* update links from attributes to SpellFilter
* unsure: should the attribute filters work purely on attributes or also consider other factors?
* implement some of the client side modifiers on the spell tooltips and buffs
* followup on 748a78c3c7
* fix return type of criteria filter callbacks (mostly in case of faulty input)
* spread the criteria var into criteria filter callbacks
* some magic numbers to constants and type declarations for params/return types
* add 'fished' as valid item source
* item source 'none' now properly selects items without source, not items without source from this list
* fixed edgecases where filter callback might have no return value
* provide empty values for non-default db fields when initializing external accounts
* removed browser check for username maxlength as it depends on auth method
* update events and actions to match TrinityCore again
* removed events and actions have been kept but marked as deprecated
* general rewording and use of UIES for better readability
* move constants to respective classes
* reevaluate usage of UNIT_FIELD_BYTES1 content
* detatch from User and Util and move to its own enum class
* added definitions for all locales the 12340 client could in theory have
* this is incompatble with the Intl extension
* version bump and php requirement bump
* do not use NULL on item stats as it prevents searching for an amount of 0 (except for stats that certain items just cant have)
* fix stats from spells granting spell power and spell healing separately
* define and use some item subclasses
