Header thumbs

xF2 Add-on Header thumbs 2.5

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Clicking header thumb image now links to post.
No longer dependent of a specific image handler. File system operations now using XenForo file functions.
Added Limit to options page. Header thumb menu now show the last 300 header thumbs recently shown.
Fixed issue dealing with header thumbs sometimes not updating due to cache.​
Added Header thumbs menu. This allows viewing the past 30 header thumbs which have been displayed.​
Updated link to thumbs.

Requires XF v2.0.12 or newer.
Updated template modification description.​
Fixed problem where Include forums in Options was not selecting...