Create lines with points issues

[MikeMillerGIS]

1: if an the edit is aborted on save, error message not be raised, edit just disapears 2: Expose option to let the user specify which order the save is occuring, i.e. save points first or save lines first

@pLeBlanc93 this is a doc change.

[MikeMillerGIS]

 <!-- Option to control which order the features are stored first, Options:
        Points - The points are stored first, this would allow the lines to pick up values from the points
        Lines - The lines are store first, this would allow the points to be validated against the lines and pick up values from them
      -->
      <Store_Order>Lines</Store_Order>