Add of GUID field in History RSS feed

The NZO id is used as unique id for the history RSS feed to help some RSS readers (like Thunderbird) to identify articles when the link field is the same for all articles.
Add of GUID field in Queue RSS feed

The NZO id is used as unique id for the queue RSS feed to help some RSS
readers (like Thunderbird) to identify articles when the link field is
the same for all articles
Merge pull request #104 from manandre/rss_guid

Add of GUID field in History and Queue RSS feeds
Fix false positive encryption alarm for some posts,
Add special option 'sanitize_safe' to remove bad Windows chars on other platforms.
Prevent "special" sub-folders on file servers from being scanned during unpacking.
Add password entry box to "File Details" page (Plush only).

Also extend api call "queue_rename" with a password parameter (value3).
Use ".admin" instead of "__ADMIN__" as job admin folder to support some non-standard Unix systems.

".admin" will be treated as a hidden folder by non-Windows systems, avoiding a problem with
wildcard expansion for par2cmdline on some Unix systems.
Remove "news" section in Config skin's main page.

Was never used and caused mixed mode https/http issues.
Revert "Use ".admin" instead of "__ADMIN__" as job admin folder to support some non-standard Unix systems."

This reverts commit 1b05bc9ed221b5684a0b579d1e0dd9de4c362d0e.
For Unix systems, expand wildcards for the par2 tool to prevent problems with some builds of par2cmdline.
Update text files for 0.7.15
Special "news_items" wasn't removed completely, leading to UI crash.
Update text files for 0.7.16
Added whitelist option for networks that don't require authentication
Updated version number
Updated to 0.7.16
Merge branch 'whitelist' of github.com:pcjacobse/sabnzbd into whitelist

Conflicts:
	sabnzbd/version.py