[CAM-4210] I can place the cursor in a cell by mouse click

AT:

with the first click on a cell I open the edit mode --> cell content is selected
with the second click in the cell I can place the curser and deselect the content
- with a click on the selected content I can place the cursor between the corresponding characters
- with a click in the empty part of the cell I can place the cursor at the end of the contend

Sebastian Stamm added a comment - 07/Jul/15 1:48 PM https://github.com/dmn-io/table-js/commit/001c91cbeaa42b340c8fa820c9098059b1f32835