Add support for paging articles up and down
Change to page height estimate

Change from a hard coded value of scroll distance (600) to an estimate of the page's height leaving out a few (4-5) lines.
Oops! Had mixed up pageup and pagedown. Now fixed
Added page up/down keyboard shortcut documentation. For feedbin/feedbin#76.
Don't focus article when clicking on a link. Fixes #77.
Don't select article when clicking on links.
Added Unread app.
Turned off problematic last-modified header.
Turn off HTTP caching for Unread.
Make sort preference for unread only. Sort starred items by when they were starred.
Default to AND for searches
Reverted starred sort order.
Initial starred export support.
Added iRSS app.
Replace entities with characters in urls.
Merge branch 'master' into starred_export
Finalized starred export
Added media indicator.
Removed unused mejs skins.
Smaller and darker media indicator.