Grafana 4.1 Release

Grafana v4.1 introduces several enhancements and new features, primarily driven by community contributions. Key updates include the addition of shared tooltips across all graph panels, enabling users to toggle between different tooltip modes, and new integrations for VictorOps and OpsGenie notifications. The release also simplifies Cloudwatch data source configuration by allowing users to set access and secret keys directly on the configuration page, enhancing usability without needing file system access. Support for Elasticsearch 5.x is included, with a note that Elasticsearch 1.x is no longer supported, urging users to upgrade to newer versions. Overall, this release emphasizes improved functionality, user experience, and community involvement in the development process.