set accept to 1 (=true) for all server-to-server shares on update, at this point in time all shares are created by the first version of server-to-server sharing and are accepted if they were added to the table

don't allow to share single files with delete permissions, user should only be possible to unshare a single file but never to delete it

Without patch, breaks with: Failed to upgrade "files_sharing".
Exception="SQLSTATE[22P02]: Invalid text representation: 7 ERROR:
invalid input syntax for integer: "5,179""

See: https://github.com/owncloud/core/issues/5758

removing unnecessary cruft - no parameter is set, none to pass.

https://github.com/owncloud/core/issues/5758

removing subquery, making more readable

See: https://github.com/owncloud/core/pull/6016#issuecomment-29510979

parameters to sql calls should be arrays

https://github.com/owncloud/core/pull/6016

boosting version to ensure fix gets executed

properly escaping the sql select statement

removing extraneous closing paren.