attempt to rename 'tag' to 'point' or 'point_string'
attempt to rename 'ctime' to 'point' or 'point_string'
#996: fix bugs...
fix internal-outputs test
fix validate test error output
update
alter reference log 'tag' references
fix cylc insert stop point
update
fix update-conflict bugs
Improve robustness of pre-init test
Merge pull request #1016 from benfitzpatrick/996.feedback

#996 feedback - rename "tag", "c_time", "ctime" to "point", "point_string"