[SexactuBridge] Fix URI and timestamp
[SexactuBridge] Fix URI and timestamp

* const DOMAIN is not supported, it must be const URI
* strtotime should be used instead of date_parse in order to
receive a valid integer
* Some small readability enhancement

simonbru/rss-bridge,ORelio/rss-bridge,kranack/rss-bridge,ORelio/rss-bridge,RSS-Bridge/rss-bridge,Riduidel/rss-bridge,Riduidel/rss-bridge,sebsauvage/rss-bridge,mro/rss-bridge,kranack/rss-bridge,kranack/rss-bridge,Frenzie/rss-bridge,teromene/rss-bridge,LogMANOriginal/rss-bridge,RSS-Bridge/rss-bridge,LogMANOriginal/rss-bridge,kranack/rss-bridge,GregThib/rss-bridge,simonbru/rss-bridge,Frenzie/rss-bridge,ORelio/rss-bridge,Riduidel/rss-bridge,RSS-Bridge/rss-bridge,mro/rss-bridge,teromene/rss-bridge