* move areatrigger teleport endpoints and instance entrance points to spawns. This makes them editable like spawn points.
* since instance entrances aren't shown on maps they are moved through the admin menu on the instances page.
* rewrote spawns SetupScript. Individual groups can now be recalculated separately.
* rewritten and moved to its own class, should be easier to expand in the future
* add missing sources and types from TrinityCore
* implement conditions on Areatrigger and Loot containers
* implement reverse lookups (e.g. a spell is a conditional for something else)
* general beautification pass .. should be more legible in general
NOTE:
* texts have been changed, so the existing translation for esES ist gone
* selecting and describing condition targets is still wonky
* append a filemtime timestamp to js/css files to work around browser caching after update
* shuffle script handling around a bit
* also user pages cant have community content
* also fix breadcrumbs on items page
* moving commonly used strings to defines
* moving commonly reused/similar page generation functions to the parent
* generally using consistent return types, more type hints and less strings
* prevent browser context menu when right clicking on UI elements with their own context menus
* fixed menu path for icons
