[Idea] Implement I18n

[casi]

...initially for the two most important languages: German and English

[casi]

@cameronnorman maybe you can help ('cause of my school english). :D

[cameronnorman]

Sure! So Initially we would like the application to support two languages:

• English
• German

In order to do this we require to incorporate I18n into the rails application. Rails has good support for this but the views need to be updated to use it.

For any questions regarding how to implement this feature, please ask

[casi]

Yeah, I know. But I've looked at that before. It is mostly hard work.
I also don't do it right away. But is definitely a medium-term goal. So thanks in advance!

[casi]

@cameronnorman I've started a bit before. So we have kinda foundation. -> Commit: 4ce0cce
If you want to participate, please tell me which views you plan to work with, so that we don't do anything twice.. (If you have time and you feel like, you are welcome to continue.) 😉

[casi]

PR #30: Build the locale switcher (DE & EN). The admin dashboard is still missing, especially the error messages.
And: All locale test cases are still missing.

[casi]

Added I18n with EN & DE locales. -> #40