Merge pull request #50 from onyx-cap/tagus

add Catalan and Portugues languages.
Merge pull request #51 from onyx-cap/tagus

delete cool-reader suppor epub.
make all Portugues variants to one.
hide sync icon on default.
Merge branch 'tagus' of github.com:onyx-intl/crengine into tagus
fix the crash problem when select the brightness menu option.