This tiny commit fixes a routing problem for proxy requests. The
router was expecting a url path behind the proxy id, if none was
given (read: the service proxied was at the root of a host) then
the router would return a 404. With this patch it now propperly
uses ProxyDataSourceRequest.

Fixed failure loop in init.d script when grafana will not start (due to permission issue or other), Fixes #1837

Graph Panel + Legend Table mode: Many series casued zero height graph, now legend will never reduce the height of the graph below 50% of row height, Fixes #1832

Change default values for linewidth and fill.

Updated version to 2.0.1 to work around rpm and deb versioning scheme does not support regular semver prerelease naming standard, it seems like 2.0.0-beta3 is newer than 2.0.0 for rpm and deb packages.

Panel title: switched from context-menu cursor to pointer, context-menu does not work on windows in chrome and firefox, but works on other platforms :(