Remove relative style for popover and handle position error. rollback #915.
Remove relative style for popover and handle position error. rollback #915.

summernote/summernote,AshDevFr/winternote,summernote/summernote,bebeeteam/summernote,summernote/summernote,AshDevFr/winternote,bebeeteam/summernote,AshDevFr/winternote,bebeeteam/summernote