Add option to log the alert message
Log when exported data saved at client
PMO-2822 Quit early (building excel sheet) if rows exceed 1-meg; and impose transfer size limit (200MB,configurable).
PMO-2814 Quit early (building CSV) if rows exceed 1-meg too
PMO-2822 explicit not null check needed (now ? why not earlier ?!) to force printing of zero cells
v1.9.5 of ra-app-19x fixes Export/CSV Export crashes and gratuitous slow performance