Merge pull request #490 from houqp/houqp-master

add missing gettext for buttondialog
fix init koptcontext with all zero bbox
protected call of getWordFromPosition
fix segmentation fault when transforming from reflow to native in blank page
Merge pull request #491 from chrox/master

several crash fixes
One more setting to preserve in floating punctuation workaround
Merge pull request #492 from thotypous/master

One more setting to preserve in floating punctuation workaround
save highlight to pdf document
fix wrong xpointer when changing screen orientation
automatically set css according to file extention
even when embeded style sheet is on.
update koreader-base
Merge pull request #502 from chrox/master

save highlight to pdf document
update koreader-base
Merge pull request #503 from chrox/master

update koreader-base
Fix bug #448.
Merge pull request #504 from giorgio130/master

Fix bug #448.
disable tap zone for config menu by default
add 'full/mini' options for progress bar of crereader
use mini progress bar by default
add two finger swipe gestures for showing TOC and bookmarks
two_finger_swipe to east is for TOC
two_finger_swipe to west is for bookmarks