Add help for the QA block about qa_block HOT 5 CLOSED

local doc_items_longdesc =
[[The QA block is a quality assurance tool for mod and subgame developers.
By using the block it is possible to:
• Browse trough global Lua variables for deeper insight
• Execute ad-hoc Lua code for testing reasons in development
• Run predefined checks for quality assurance
]]

local doc_items_usagehelp =
[[Place the block and open the formspec using right mouse click.
Use the “Globals” tab for browsing trough global Lua variables.
Use the “Checks” tab to run Lua code. Editing the code before running is allowed.
The checks are read from the $MODPATH/checks directory.
It is possible to add new Lua files and run them without restarting the game. Just use the Refresh button.
Ususally the print() command is used in checks, so look in debug.txt or the Minetest console output.
Some chat commands are defined as shortcuts. See “/qa help” for more information.
Please note the “/qa ui” cannot store the current globals navigation, the navigation can be stored in the QA block only.
]]