This reverts commit 436f14f1.

Link:19777.

1. do not relayout item while renaming operation undo/redo.
2. remove useless code.

Link:19739.

this is trying to avoid crash by thread safety. related to #19266.

peony-qt-desktop: do not refresh while resize event called.

link to: http://172.17.66.192/biz/bug-view-19522.html

link to: http://172.17.66.192/biz/bug-view-19522.html

Link:19086.

fix header bar and navigation bar didn't update state while entry search directory with terminal commandline.

the uri encoded or decoded will not effect the result.

use weak_ptr, deprecated addToHash argument and remove function.

fix me: preview page's thumbnailing doesn't work well.

Link:19299.

	    [1] 修改一处内存的问题。
            [2] fixbug：11946 无法通过向侧边栏中的u盘drop file。

        [KEYWORDS ] drop file
        [TO SOLVE ] 11946
        [TEST SUGGESTION] 无法通过向侧边栏中的u盘drop file
        [SUBMIT BY] renpeijia
        [REVIEW BY] 兰悦
        [TEST   BY]

Link: #17968 #19172

Link:bug#19086.

Link:#19378.

mark blocking code in ui thread. we need to replace blocking code for improving peony's performance.

[LINK] 19193

MainWindow: improve create folder interaction.

MainWindow: paste short cut will select pasted item after operation finished.

allow update window selection by dnd.

Link: Bug#18957

Link:Bug#19234

Link: Bug#19041.

[LINK] 16610

[LINK] 18688

this patch will fix http://172.17.66.192/biz/bug-view-18861.html