cleaned up the view during initialization

Set main axes aspect ratio and x- and y-limits to standard epoch values
to by pass the small flicker seen on initial loading to handle this
change after the main figure is visible.
renamed aux folder to auxiliary

This was done to handle an incompatibility with Windows which uses aux
as a reserved word.
changed 'aux' path reference to 'auxiliary'
Added magnitude squared coherency detection method

access it from the detection toolbox in the SEV
for sync