htWirebrush4SPAM: SPAM filtering middleware

During a few months of hard-working testing the applications we found (and fix) several bugs:

• eml_parser_plugins: in order to support as many emails as posible is necessary to have a parser as flexible as possible when analyzing the RFC2822 emails structure.
• Fixed memory leaak on Core in email report.

Wirebrush4SPAM now includes some prescheduler algorithms in order to improve the filtering efficiency. Prescheduler technique implements diferent planification types in order to choose the most appropriate according to the needs of each user.