Mantis 0001157: System/Update Manager/ upload button. Increase nginx client_max_body_size to 25M.

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1530 3c3d7b80-5828-415e-9f61-280b98178fff
Mantis 0001161: OMV send cron email about samba-recycle and mdadm

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1531 3c3d7b80-5828-415e-9f61-280b98178fff
Improve code.

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1532 3c3d7b80-5828-415e-9f61-280b98178fff