If you have responsiveness issues, do not use ProGuard

I found out that a bunch of issues with 4.0.4 were caused by methods being obfuscated and not being called. I turned off ProGuard raising the size by 20 KB and things are working terrific.
Update strings.xml
add baidu search engine

add baidu search engine
Merge pull request #21 from Awesomez/master

add baidu search engine
Merge pull request #19 from dowl/patch-1

add missing elements and retranslate some
Merge pull request #1 from anthonycr/master

baidu search & zh-cn translate