0.7.4, support weekly,monthly indexes, tls issues fixed, show some email info in session summary, support unlimited storage files, style.
css creating change, unique on email fields

* setting rotateIndex in the default section allows for daily, weekly, and monthly indexes
* fixed buffer overflow in tls alt name parsin
* in the session summary show the from, subject and file names
* can now have "unlimited" number of files
* negative file pos is now the file number, positive is file pos
* style.css is now created in memory only, don't need to chmod public directory
* support unique queries on email data