Add Estonian locale
Add Estonian locale

The locale definition includes a function for first letter capitalization, since the subject is often the first word in Estonian.

baianat/vee-validate,logaretm/vee-validate,baianat/vee-validate,dfcook/vee-validate,dfcook/vee-validate,danielgranat/vee-validate,logaretm/vee-validate,danielgranat/vee-validate,baianat/vee-validate,logaretm/vee-validate