SSP-651 Delete aggr js and separate Wins/*inux sencha profiles

Also eliminates use of activeByDefault, which is commonly
problematic since it's automatically shut off if any other profiles
are activated, which isn't what most people expect. So now instead
of -PnonProdJs use -PSKIP_SENCHA

All new and modified profiles to try to match existing conventions
-- upper casing mainly.
SSP-651 Add aggr js to .gitignore

There's no good way to have the sencha command run during the
package phase so we can keep its input *and* output completely
confined to the target dir - the war plugin always beats us to
the punch and zips up the war after copying the webapp resources,
but before we have a chance to run. So... we just accept that
the aggr js will end up in source and add it to .gitignore.
SSP-798 Fix up references to new files from ssp.jsb3