added stop-upload command; removed un-needed file stats; improved daq/upload reporting; cleaned up un-needed keys from catalog plugin

reworked reporting for both daqs and uploads; improved ftp utility efficiency; simplified file processing

found bug with empty destination directory;prevent checking for upload if plugin does not need to process files

modifications to eliminate processing of hidden files and of unchanged files that were processed already; checksum is now done by default

changed file processing interface; added support for relative file paths (with respect to daq directory)