#7 User defined locale in graphics

[evernat]

Here is a patch to have a user defined locale in graphics.
JRobin currently uses Locale.getDefault() and it is good when there is a single locale and when the server is correctly configured.
But it is strange when the week days are different from the title's and legend's locale if the user's locale is different than Locale.getDefault().

The patch adds a setLocale(Locale) method in the RrdGraphDef class to be used for display of week days, firstDayOfWeek and numbers.
When the setLocale method is not used, there is no change of behavior.
I have tested the patch locally.

And thanks for a useful tool.

[evernat]

Path for a user defined locale in graphics