Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/34261

Closes #33758

Previously the task status would be visible even if there where no tasks
in the description. This fixes that by changing the regex to check for
tasks without 0.

This also fixes a bug where update the description inline would not
update the task status text on screen.

Closes #33880

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/33877

Regressed in
https://gitlab.com/gitlab-org/gitlab-ce/commit/5a95d6f8dae00b31b694759c6ddbf6d83b1a7890#3a15290e7696397415523e0b664aceb3dd4010ae_0_46
where the ref no longer matches what we call `renderGFM` on.

moved setstate method into store

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Fixed random if statement

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