Fomat style.
jQuery object dose not need to check that no DOM object is selected.
It is no effect unless DOM objects is selected.
Remove double checks to exclude type less spans from target of arrange position.
Improve moving grids to once per render.
Grids of span that have child spans have been moved twice.
1. Move to same y position as no child span's.
2. Move to y position over child span's.
Make view.renderer.grid IIFE.
Split a function 'updateGridPosition'.
Update the position of a grid only if that position is changed.
Refactor to split  inner functions of 'view.renderer.gird'.
Move only relations that is associated with entities in moved grids.
Refactor to remove a function 'view.renderer.helper.redraw' that is unnecessary already.
Merge pull request #8 from pubannotation/tunning_arrange_position

Tunning arrange position