Minor fixes
Added convar descriptions to many default Lua convars
DCollapsibleCategory items support disabled styles
Visually and physically disable (but not hide) disabled Sandbox tools
Tools disabled by the server using "toolmode_allow_<mode>" convars are visually represented as such in the spawnmenu
https://files.facepunch.com/rubat/1b0311b1/dLCCdKRb8T.png
Display a warning when trying to activate tools without a toolgun