Fxi bugs of display hint

while finish import data and before merge them
improve performance

of merging stage while importing data
Merge branch 'fixbug-1.0.20140821' into develop
single instance of loading and main activity

now, if import data when there is a background instance of failword, it
won't create a new instance
Correct way to deal with lock of screen in about page
Merge branch 'fixbug-1.0.0.0821.1' into develop
shortcuts of app
LICENSE of app
change readme file to description of app
license: not for commercial
update shortcuts and readme
update image links of readme

it will come to efficiency after merge to master
Merge branch 'feature-documents' into develop
Merge branch 'develop'