Remove some default value logic from getADDEImage.

The intent is to let the server work things out (if the user hasn’t
specified a value). The following getADDEImage keyword parameters have
been affected: place, coordinateSystem, location, and time.

[1665]
[0] Dreamweaver updates synced from web server.
add wrapper around DisplayControlImpl.setZPosition called
_Layer.setVerticalPosition [1517]
Jython shell popup now appears under mouse pos.

[888]
Restore hi-res US map with appropriate label [1484]
Merge remote-tracking branch 'upstream/master'
[0] Dreamweaver updates synced from web server.
[0] Dreamweaver updates synced from web server.
Fix copying empty mcidasv.log with fresh user dir.

This commit adds logic to check for a zero-length “mcidasv.log” (prior
to copying into archived_logs). If the file is zero-length, it is
neither copied nor truncated. If the file is not zero-length, the old
copy+truncate stuff happens.

FWIW I’ve only been able to replicate the problem on Windows.

[1689]