1、将MainActivity中部分view的visibility属性从数字代码改为常量，提高代码可读性
2、解决issue#25he issue#55中提到的问题。解决方案是在load_failed界面加入一个刷新的按钮
解决issue#82
add weixin scan line
scan Screenshots
fix #84:alter AndroidMainfest.xml to make MainActivity allow hardwareAccelerated
fix the issue #79 and issue #78. alter .classpath file to makethe denpendencies will be exported when building
fix the issue #75
fix a 9.png file
encoding DateUtil.java in UTF-8 without BOM
fix the issue #9
delete uuseless file
Revert "delete uuseless file"

This reverts commit efeedd3b1feff7d345955adc0bc4bf3f84526509.