Merge pull request #25 from onyx-peekaboo/master

To increase support for mobile phones
modify russion translate
Merge pull request #26 from onyx-cap/master

修改俄语翻译
fix crashing error of null pointer
add WakeLock protect when opening book
russion translation
Merge pull request #27 from onyx-cap/master

俄语翻译
show CR3's option dialog instead of ReaderSettingsActivity
update option dialog's icons for EInk screen
coolreader settings suport dpad control
clean code
Merge pull request #28 from dxwts/master

回归主干
adjust page/down code for screen updating on RK2906
Merge remote-tracking branch 'origin/master'
update icon
Merge pull request #29 from dxwts/master

回归主干
add can delete bookmark
update code according changes in OnyxAndroidSDK
Merge branch 'master' of github.com:onyx-cap/crengine
Merge pull request #30 from onyx-cap/master

添加bookmark界面删除功能