2039: update selection range
2048: selection range fix1
2052: try fix SelectionRange
update gitconfig
2053: Selection Range
2053: selection

1. update selection range
2.  use IGraphic.SetCanvasOrigin() instead of
IGraphic.OffsetCanvasOrigin()
3. add HtmlContainer MaxBottom
2056: fix Padding

1. fix Padding Width
2. refactor CssBox width , height properties
2057: fix table padding

fix table cell padding
2058: fix FreezeWidth
Merge branch 'v1.7'