MinIO: Major feature release

## Highlights - Minio server now supports disk caching. Disk caching is available for both GET and PUT operations. To get started, see documentation [here](https://docs.minio.io/docs/minio-disk-cache-guide). - Limited support to run minio server in WORM mode. See `minio server -h` for more details. - Fixed a regression in removing bucket notifications [#5673](https://github.com/minio/minio/pull/5673). ## Changelog - Add disk-cache and worm to user-agent (#5729) (03/28/18) <poornas> - Add disk based edge caching support. (#5182) (03/28/18) <poornas> - Use uuid.New() for uploadID in azure gateway (#5721) (03/28/18) <Harshavardhana> - After healing re-load disks with the new format (#5718) (03/27/18) <Harshavardhana> - change fs.json format to include checksum fields (#5685) (03/27/18) <poornas> - Quick support to server level WORM (#5602) (03/28/18) <Bala FA> - Use paho configuration API instead of setting it directly with struct initializer. (#5707) (03/27/18) <Takeshi Watanabe> - Fix object deletion where quorum is not available (#5709) (03/27/18) <Nitish Tiwari> - Use readQuorum instead of writeQuorum to check bucket exists (#5715) (03/26/18) <Harshavardhana> - revert browser newux changes (#5714) (03/27/18) <Kanagaraj M> - Add missing env doc for MINIO_DOMAIN (#5705) (03/26/18) <Harshavardhana> - Return complete Location URL in CompleteMultipartUpload (#5692) (03/23/18) <kannappanr> - added eslint prettier check to travis (#5701) (03/24/18) <Kanagaraj M> - Remove old unmaintained docs (#5699) (03/23/18) <Harshavardhana> - Add iptables/ufw command example to open relevant ports for Minio (#5604) (03/24/18) <Nitish Tiwari> - added yarn test to travis.yml (#5696) (03/23/18) <Kanagaraj M> - updated favicon.ico and ui-assets.go (#5698) (03/23/18) <Kanagaraj M> - Fix the styling of upload abort button (#5697) (03/23/18) <Rushan> - Fix New UX related bugs for Alerts, BucketList and Abort Upload modal (#5694) (03/22/18) <Kaan Kabalak> - Fix docs to expand on new limits on a distributed setup (#5677) (03/22/18) <Harshavardhana> - Add unit tests for endpoint-ellipses.go (#5681) (03/23/18) <Nitish Tiwari> - update browser assets for newux (03/22/18) <Harshavardhana> - Fix failing unit tests in browser (#5688) (03/23/18) <Kanagaraj M> - adding local pagination to bucket list (#5684) (03/22/18) <Kanagaraj M> - Browser: Update UI with new components and elements (#5671) (03/21/18) <Rushan> - Tweak fetchBuckets to comply with the changes made to the routes (#5592) (03/02/18) <Kaan Kabalak> - refactor Dropzone component and added tests (#5578) (03/01/18) <Kanagaraj M> - removed duplicate route components from browser (#5584) (03/01/18) <Kanagaraj M> - Refactor bucket delete and bucket policy (#5580) (02/27/18) <Kaan Kabalak> - allow non-loggedin users to access public bucket (#5570) (02/24/18) <Kanagaraj M> - Refactor browser dropdown links and components (#5562) (02/22/18) <Kanagaraj M> - Refactor download object and bulk action components (#5546) (02/21/18) <Kanagaraj M> - Refactor delete object and share object components (#5537) (02/19/18) <Kanagaraj M> - Add missing unit tests for PR #5499 (#5527) (02/16/18) <Kaan Kabalak> - Refactor make bucket and upload components (#5521) (02/15/18) <Kanagaraj M> - re-organize components and actions by feature (#5518) (02/13/18) <Kanagaraj M> - Add missing unit tests to JavaScript and React components (#5505) (02/12/18) <Kaan Kabalak> - Refactor of components (#5499) (02/10/18) <Kanagaraj M> - upgrading react and refactoring components (#5409) (#5444) (02/01/18) <Kanagaraj M> - support for sourcemaps in browser code (#5451) (01/29/18) <Kanagaraj M> - Upgrade webpack from v1 to v3 (#5448) (01/28/18) <Kaan Kabalak> - Change name of 'Settings' dropdown link to 'Change Password' (#5394) (01/18/18) <Kaan Kabalak> - Center dropdown toggle correctly across browsers (#5395) (01/18/18) <Kaan Kabalak> - Do not check for GOPATH env for builds (#5628) (03/20/18) <Harshavardhana> - Fix regression in removing notification (#5673) (03/20/18) <Harshavardhana> - Remove snap reference from the repo (#5676) (03/19/18) <Harshavardhana> - Update yaml files to latest version RELEASE.2018-03-19T19-22-06Z (03/19/18) <Minio Trusted>