Migrate _Remediate element selection_ to docs site

[tungmhoang]

Tasks:

• Checkout the branch migrate-test-management-v2-docs.
• Replace the content of docs/modules/test-management/pages/remediation/annotate-a-test-step.adoc with the content in this file, including the title:
  KOBITON-Remediate element selection [Review]-141124-041453.pdf
• make sure images are left-justified, less than 100KB in size, and has alt text.

[Hikkigaya]

@tungmhoang Changes pushed to the PR: #288