Merge pull request #85 from sunithamisra/master

Removed the recidual argument "listfiles" which was serving no purpose
Cleaned up msg icons in toolbar
Merge pull request #86 from sunithamisra/master

support for iso9660 ftype
Updated file access tool with del files management
Added BitCurator mounter and addindicator
Updated mounter headers
File access tab fix
Removed extraneous file access code
Additional old file access code removal
Updated file access code
Removed unused menuWindow entry in bcdatv2
The following fixes incorporated:
1. Temporary fix for cancelling  textEdit docWidget: Removed the option to
   delete the window.
2. negative tests: handled errors created when one tried to do export or
   cancel export when there was no tree widget.
3. The cursor now automatically goes to the end of the message and imginfo windows,
   displaying the latest.