rewrote this to extend on image2.
this will add textfields to the dialog.
there is still a bug, when the editor is switched from sourceview the attributes are removed.
removed unneeded icons reference
- fixed bugs with persistence of data.
- moved the data events into one place instead of the setup functions for the dialog elements.
- removed CKSource from authors, since this was a complete rewrite instead of a fork of image2 now.
- added correct language strings.
updated labels to be more consistent.
removed other language strings.
updated readme
added dependencies.
removed icons.
removed useless allowedContent variable.
added feature adding with the correct API call.