1.add file copy and file move function
1.add RenameActivity.java for file rename
Merge branch 'theme_change'
delete some unuseful files
untrack some files
some modified
1.modified all dialog ui
2.some big improve in ui
3.fix some filelist update bug
4.fix some mail send check
Merge pull request #15 from TopLittelbob/master

sync the last version