Pt-Cr's requirement.
MainWindow Update

在.pro文件中加入了一条日后用作国际化翻译的语句。修改main函数中window的显示为最大化。修改了mainwindow.h.cpp,增加了若干注释,调整了部分语句的顺序,使其更易读同时代码行数更多。
Some new UI widgets
New ui framework
newAction complete
1. Add volumn according to Pt-Cr's requirement.
2. make insertMultinote() change properties.
.
Merge branch 'master' of https://github.com/bg95/WhitePigeon

Conflicts:
	WhitePigeon.pro
A little flaw.
 On branch master
 Changes to be committed:
	modified:   WPScore/WPPart.cpp
	modified:   WPScore/WPPart.h
	modified:   WPScore/WPProperty.cpp
	modified:   WPScore/WPProperty.h
	modified:   WPScore/WPScore.cpp
	modified:   WPScore/WPScore.h
Filter for properties is added.
Lock is added!
before merging master
merge master with local files of Pt-Cr
merge with branch master