reduce factor to 2 for heavy load
revert to old factor
filter list if not too large only
make sure we have something to filter
readme update
experimental rtl support (#209)
add bitcoin address (fix #101)
about page restyling
new label (#129)
keep text only before detecting direction, use jsoup because bidiutils html stripping is too restrictive
make sure we have content
Implemented "goto subscription".

TODO:
 * Neither navigation with arrows nor selection with ENTER implemented,
   must click a subscription.
refactored flatten to use new traverse function
move style to appropriate file
refactored dialog
fix i18n generation script
new labels
missing semicolons
since push info is fetched lazily anyway, get it with the join
not needed for count