change(grafana-cli): changed upgrade to update in command line, upgrade and upgrade-all will still work as aliases

closes #4572

fix(graph): Fixed issue with legend height in table mode with few series, affected iframe embedding as well, fixes #4640

Table module calls renderingCompleted

Consistency in options for future support

feat(graph panel): changed to PR #4493 and other polish, removed the relative time from graph tooltip, did not think it worked that well

highlight series name in tooltip when shared tooltip enabled

fix(): fixed issue with series override color selector when using the mouse to select color option, fixes #4620

fix(series overrides): graph no rerenders with new styles after updating series override, fixes #4621

Updated font and a new style

fix(graph panel): fixed issue where newly added graph panels shared axes config binding, fixes #4582