Metric names should support utf-8

[mleinart]

The first blocker to this is in the grammar with validMetriChars: https://github.com/graphite-project/graphite-web/blob/master/webapp/graphite/render/grammar.py#L52

The grammar should instead have a blacklisted set of characters used by the grammer itself (parenthesis, etc).

This is related to #242 in that the grammar changes are closely related

[davewongillies]

+1

[banzayats]

There is no validMetricChars in grammar.py, but webapp still doesn't work with utf8 characters.
Any news on this issue?

[nacyot]

+1

[karmicnewt]

+1

[KevinJMao]

+1

[yinchuan]

+1

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.