HPCC-8999 Move new Features in ECL Watch

Separate out the new ECL Watch features and add as new section in navigation
bar.

Fixes HPCC-8999

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #4144 from GordonSmith/HPCC-8999

HPCC-8999 Move new Features in ECL Watch.

Reviewed-By: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>