luci-app-statistics: support specifying line width in graph definitions
authorJo-Philipp Wich <jo@mein.io>
Sat, 10 Jun 2017 18:37:29 +0000 (20:37 +0200)
committerJo-Philipp Wich <jo@mein.io>
Sat, 10 Jun 2017 18:37:29 +0000 (20:37 +0200)
This allows a graph definition to explicitely request LINE1, LINE2 or
LINE3 for a data source.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

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