Merge pull request #121 from chrox/master

update to latest koreader-base
add bgcolor/fgcolor for TextWidget
add enable/disable method for Button widget
add strings in highlight dialog for translation
Merge pull request #122 from chrox/highlight

add strings in highlight dialog for translation
update translation
add GNU FreeFont for some rare charactors like phonetic symbols
add glyph fallbacks
if glyph is not found in specified fontface, fallback fonts are checked
on by one until a glyph is found.
Merge pull request #123 from houqp/houqp-master

update translation
add 'make fonts' command that merges additional fonts in resources into fonts pool
remove selected word if hold moves out of word box
parameterize lighten color in displaying saved highlights
rm additional fonts in resources dir in customupdate
bugfix: make a fresh copy of Geom before transforming
export hightlights to My Clippings
Merge pull request #124 from chrox/glyph_fallback

add glyph fallback
Merge pull request #125 from chrox/highlight

bugfix: remove selected word only if hold moves out of word box
update koreader-base for glyph checking