Update start.jpg to v1.2

Add release notes for v1.2.0

Add golint and gocyclo smaller make targets

Remove extraneous whitespace from GitHub issue templates

Bump Makefile version to v1.2.0 to prepare for a release

Allow --kubernetes-version to be specified without the leading v

Provide warning message for unnecessary sudo

Universally redirect stdlog messages to glog

Make markdownlint happy about whitespace

Adjustment titles of Chinese & English issue template titles

Enable running containers with Podman

Use non-list YAML format for issue labels, simplify text

zh-CN: Use non-unicode percent signs for proper interpolation

Use "make mdlint" to check current status

The standard "fmt" target will also rewrite

Add return code, by checking for empty output

Also fix the broken fmt and reportcard ones:

Recursive variable 'SOURCE_DIRS' references itself (eventually).

Update Kubernetes default version to v1.15.0

Suppress error message when translation file doesn't exist

Add ability to localize all strings output to console