RFR: 1254: Add a checkbox for CSR requirement

[Guoxiong Li]

Hi all,

This patch adds a checkbox for CSR requirement in the `Progress` and adds the corresponding test cases.

Thanks for taking the time to review.

Best Regards,
-- Guoxiong

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Commit messages:
 - 1254: Add a checkbox for CSR requirement

Changes: https://git.openjdk.java.net/skara/pull/1246/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=1246&range=00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-1254
  Stats: 29 lines in 2 files changed: 20 ins; 1 del; 8 mod
  Patch: https://git.openjdk.java.net/skara/pull/1246.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1246/head:pull/1246

PR: https://git.openjdk.java.net/skara/pull/1246