Minor Sniper fixes.

Fixed the bug where some pokemons were being classified as VIPs when they really werent (Gobb pushed a fix for this, but it is 'wrong' and was just a temporary one).
Increased the validation timeout from 10 to 7: this IS NOT going to be customizable!!!
Added the "enabled" flag for sources.
Sniper's config validation wont be triggered if it is disabled.
Updated the docs/configs accordingly.

…her the pokemon has been expired or not

…o dev

…o dev

Added a default expiration time (5 minutes) for sniping data that does not have an expiration value. This was due I found some source that did not provide this info, although, after some testings, all of its reports were invalid data.