Merge pull request #10 from sitefusion/hotfix/6.0.3

Fixed double function in customtree, fixed warnings in webfrontend files...
Added coordinates to the CustomTree itemclick events as handler arguments (x,y).
Added server side event for X and Y on position from itemClicked in customTree; Added openPopup method to manually open a popup
Add a comment to notify about deprecation of after_pointer
Merge branch 'hotfix/6.0.4' into develop