'#2315 Emule collection parser

[patrickdalla]

Parses and extracts main info from the files with emulecollection format: https://github.com/pladaria/emule/blob/5b8388f03702f9b1eb68de859c1b7e1e0301af90/srchybrid/Collection.cpp

Also, in case the file does not follow this spec, tries to extract ed2k link urls from the content, and parses them.

The correspondent file hash is searched in known PI files hashdb, and if found, its entry in table is highlighted in red.