Merge pull request #1334 from hwhw/master

fix for rotated document to file manager transition: do a refresh
fix #1336 by ignoring uncompatiable saved highlights
workaround to fix #1340
update koreader-base to get rid of 'cannot open' error message
make sure refresh_count is incremented by only once at most for each repaint
Merge pull request #1341 from chrox/master

fix #1336 by ignoring uncompatiable saved highlights
issue a full refresh when changing rotation
pull latest base: fix zero-size refresh cases (Kobo framebuffer crash)