[documents] Clarified status of ETag support for adding documents to folders
[documents] Clarified status of ETag support for adding documents to folders

Removed a TODO about ETag support for adding documents to folders.

Pecisk/libgdata,Distrotech/libgdata,pwithnall/libgdata,Pecisk/libgdata,Pecisk/libgdata-gtasks,Pecisk/libgdata-gtasks,Pecisk/libgdata-gtasks,Pecisk/libgdata,Distrotech/libgdata,pwithnall/libgdata,GNOME/libgdata,Distrotech/libgdata