Add remove scheduled item method

[alexFilim]

Hello,

I'd like not only to add items, but also to remove them (and then informing the server about the this)

Currently, the workaround I will use is to delete the item from a modal window, send the update to the server and then re-draw the whole calendar.
But it would be more efficient to send a simple delete item command to a server

Thank you!

[pravnkay]

Yep., this feature would be a blessing ay my current situation.

[PabsDan]

Please, someone add this feature. Delete items from the timeline is absolutely necessary. Thank you.

[sebasira]

@iGeophysix take a look at this fork from another user's extension project, based in @ateliee initial job