Create zh_CN.po

Chinese Simplified language add.
Changed button labels to icons
Pretty buttons with icons, tooltips on buttons with icons, added implode and explode effects, added qimageblits(KDE lib) dependency to get more effects
No need for explicit qimageblitz requirement in CMake
Added several more effects
Dont quit the app after showing the file manager
Border radius tweak. Much better on the eye
Merge pull request #14 from zhcj/master

Create zh_CN.po
Merge pull request #15 from dekomote/icon-buttons

Pretty big changes
Revert "No need for explicit qimageblitz requirement in CMake"

This reverts commit 335da99f963d64608029a46dc334bb6c53a0a601.