* don't remove grafana-server and grafana-cli binaries from /usr/share/grafana/bin in deb and rpm packages
* don't add config overrides in /usr/sbin/grafana-server
* avoid the need for a second bulky binary for grafana-cli
* look for grafana-server in $PATH as well as same directory
* implement unified "grafana" command
* update dockerfiles, fix grafana-cli -v
* update packaging to work with single binary
- add wrapper scripts for grafana and grafana-server
- update and sync package files
- implement --sign flag of build package command
- stop packaging scripts folder, they are not useful for end users
- add support for --configOverrides in server command
- remove unused nfpm.yaml config file
* windows support
