Tweak rose suite reload comment.
Update rose-install.html

Fix typo.
Update CHANGES.md
Merge pull request #1326 from kaday/tweak_reload_message

Tweak rose suite reload comment.
Cylc 6 updates

Rephrase *cycle time* to *cycle point*.
Suite log/job/ and work/ restructure.
ROSE_TASK_LOG_DIR: new environment varaible, alias of CYLC_TASK_LOG_ROOT.