add workaround for double scrollbars in feed panel
Merge pull request #101 from yanobs/master

 Replace call to vsprintf to sprintf because of arguments format
teh dreaded orange... no more
another attempt to workaround against feedtree scroll issues
fix invisible active headline in 3pane mode
cleanup_tags: remove dots
send Last-Modified header with the local image
Merge pull request #102 from vapier/master

send Last-Modified header with the local image
installer: do not create unneeded blank line at the end of config.php
unbreak auth_remote and possibly other auth plugins
cdm expandable: unify style with expanded
Avoid updating feed based on user pref DEFAULT_UPDATE_INTERVAL if it is set to -1 (no update)