Adding functionality to the XCache Consistency Check tool

• Add logic to remove corrupted files and an option to don't remove but just logging it
• Fix logging to stdout after using file handler on logging.
• Make the script to exit when cannot write to DB
• Fix logic around using user defined 'path', 'rootfile' or finding path automatically
• Change log messages to show full path and not only the file name
• Update the last check timestamp in a db record when the checksum is verified
• Store full path instead of only filename on db to avoid possible duplicates
• Preventing crashing due to some non-required arguments are not defined on the config file
• Add option ‘remove_only_from’ to allow removing files from a specific list of directories