Fix some can't translate strings on UI (#515)
* Add & to "Scan & Cleanup" menu item
Missing a ‘&’ punctuation on this menu item.
* fix can't translation strings on Cleanup Setting
* fix can't translation strings on Combo Viewer
* fix can't translation strings on Main Windows
* fix can't translation strings on Preference
* fix can't translation strings on Context Menu
* fix can't translation strings on Style Picker tool
* fix can't translation strings on Watercolor FX
* fix can't translation strings on Tape Tool
* fix can't translation strings on Rotate Tool
* fix can't translation strings on FileBroswer
* fix can't translation strings on FileBroswer
* fix can't translation strings on FileBroswer
* Add new source strings and translate in Chinese
* Add new source strings and translate in Chinese
* Add new source strings and translate in Chinese
* Add new source strings for french
* Add new source strings for german
* Add new source strings for italian
* Add new source strings for japanese
* Add new source strings for spanish
* Add new source strings for spanish
* Add new source strings for japanese
* Add new source strings for italian
* Add new source strings for german
* Add new source strings for french
* Add new source strings for spanish
* Add new source strings for japanese
* Add new source strings for italian
* Add new source strings for german
* Add new source strings for french
* include Qt translation support
* include Qt translation support
* Update stylepickertool.cpp
* Update viewtools.cpp
* remove modifications
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* remove modifications
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* Update stylepickertool.cpp
* Fix more can't translate strings on UI
* translation support for Pick Style Tool and Rotate Tool
* Add more source strings in all language TS files
* update qm files of chinese
* Remove modifications of Style Picker tool & Rotate Tool again...