misc. bug fixes and updates:

add JSON and Restore Tabs modules

Log Viewer: FM
 - add JSON web viewer
 - don't delete logData after parsing: always keep it
 - fix performance issue with portal when many records in related table
 - use Perform Script on Server

Other Log modules
 - minor undocumented fixes

LogDataSession custom function
 - updated documentation

LogData custom function
 - add: AccountPrivilegeSetName, CurrentPrivilegeSetName, logLevelToWriteOffset, LOGLEVELTOWRITEOFFSETglobal
 - move UserName to the ALL LOG LEVELS section (helps to differentiate two users logged on with the same account)
 - include additional detail when log level is = 2 rather than = 1
 - change theMessage parameter to theLogMessage
 - encode theLogMessage parameter as logMessage instead of message
 - modify documentation/notes
remove DDR (Git/GitHub detects these files as binary, so they couldn't be diffed)