DataStore char-based getters return *no value* for any module that hasn't
scanned a given char (DataStore.lua: 'if not arg1.lastUpdate then return end').
Fresh CoA alts have partial per-module data, so the frames crashed feeding
'no value' into format()/concat/arithmetic/pairs. Guarded every such site:
AccountSummary, Activity, BagUsage, Quests, Reputations, TabCharacters,
DrawCharacterTooltip, recipe tooltip. No DataStore contract change.
GetXPRate / GetRestXPRate did raw arithmetic on character.XP / .XPMax /
.lastLogoutTimestamp, which are nil for own alts seen via guild comm but
never fully scanned. Crashed AccountSummary on Vol'jin - CoA Beta.
florian.berthold