Revert 9971eb85 and make multi-lines strings more readable.
(Multiline translatable strings extraction has been fixed
in koreader-misc tralua_xgettext.py.)
Some problem somewhere with [[...]] strings starting with a
leading newline. Should probably be allowed, but for now
fix the few such cases to allow them being translated.
When hyphenating a word, the existing algorithms enforced a minimal
length of 2 for each word fragments on left or right side.
This adds a widget to allow changing these minimal sizes (from 1 to 10).
