Merge pull request #561 from vuolter/s/hoster/UptoboxCom

XFileSharingPro: Fixed expired session detection
Fixes #558
Merge pull request #560 from vuolter/s/hoster/RapidgatorNet

RapidgatorNet: __pattern__ updated (thx Gromit)
Hoster: XFileSharingPro: FILE_SIZE_PATTERN updated
Hoster: RyushareCom: FILE_SIZE_PATTERN fixed