[electrophysiology_uploader] Translate electrophysiology uploader module

[SKADE2303]

This PR is responsible for translating the module media to different languages. Currently only 'Hindi' language is supported but other languages can be added as required.

Testing instructions (if applicable)

1. Run 'make dev' to load changes
2. Change language_preference to Hindi in my_preferences Tab
3. Go to media tab to see translated web page.

[kongtiaowang]

@SKADE2303 Could you add the "Hindi" into raisinbread/RB_files/RB_language.sql and 0000-00-00-schema.sql? Thanks.

[driusan]

@SKADE2303 do not add it to 0000-00-00-schema.sql. We don't want it to be enabled out of the box for new installs unless a project specifically enables it, but I think you can add it to raisinbread/RB_files/RB_language.sql so that it's available for development/testing.