fixed google calendar i18n support

[heikokue]

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Proposed changes

this two dynamic words are forgotten to support i18n (see picture)
and calendar.label.before and calendar.label.start are double/obsolete

Checklist

• I have read the contribution guidelines
• For non-bugfix PRs, I have discussed this change on the forum/slack team.
• I have run grunt to verify the unit tests pass
• I have added suitable unit tests to cover the new/changed functionality

[coveralls]

Coverage remained the same at 71.026% when pulling 1245b4c on heikokue:fix_google_calender_i18n into a8a3bd8 on node-red:master.

[coveralls]

Coverage remained the same at 71.026% when pulling 1245b4c on heikokue:fix_google_calender_i18n into a8a3bd8 on node-red:master.

[dceejay]

Good spot - thanks - I won't republish until translation in place.