db-prefs: better error output for missing prefs, digest: hide DIGEST_ENABLE pref missing for unitialized users

while cdm_auto_catchup is enabled, after scrolling set active article to the topmost visible in the buffer so that n/p hotkeys would not reset scrolling position

Exclude the article author from the cdm title link

This reverts commit 52af297e, reversing
changes made to a3b9fd12.

This reverts commit 4676b4fc.

Conflicts:
	locale/hu_HU/LC_MESSAGES/messages.po

752 strings, 100% translated

@FIXED dijit modules aren't cached in perfs.php

I don't know if it's the best practice of using Minifier.php like this

@FIXED dijit modules aren't cached in compressed mode

Feature #686

If the feed cannot be parsed there is not particular error but always "Unknown/unsupported feed type". The patch uses the error from the XML parser which gives more detailed error reporting.