Greek support for frontend

[kostisalex]

References

Support for greek language in frontend

Description

Generation of el.json5 file and translation of all frontend messages in greek. The messages have been reviewed

Instructions for Reviewers

• src/assets/i18n/el.json5
  modified: config/config.example.yml
  modified: src/config/default-app-config.ts
  modified: src/environments/environment.test.ts

Checklist

This checklist provides a reminder of what we are going to look for when reviewing your PR. You need not complete this checklist prior to creating your PR (draft PRs are always welcome). If you are unsure about an item in the checklist, don't hesitate to ask. We're here to help!

• Includes a HUGE el.json5 file with translations. My PR is small in size concerning code (e.g. less than 1,000 lines of code, not including comments & specs/tests), or I have provided reasons as to why that's not possible.
• My PR passes TSLint validation using yarn run lint
• My PR doesn't introduce circular dependencies
• My PR includes TypeDoc comments for all new (or modified) public methods and classes. It also includes TypeDoc for large or complex private methods.
• My PR passes all specs/tests and includes new/updated specs or tests based on the Code Testing Guide.
• If my PR includes new, third-party dependencies (in package.json), I've made sure their licenses align with the DSpace BSD License based on the Licensing of Contributions documentation.

[kostisalex]

@tdonohue

[kominis]

Messages are correct

[kstamatis]

There are some misleading translations, mostly on the following:
item: "στοιχείο" instead of "εγγραφή"
bitstream: "ροή bit" or "δυαδική ροή" instead of "αρχείο"
map item: "χάρτης" instead of "αντιστοίχιση"
format: "μορφή" instead of "μορφότυπος"
bundle: "δέσμη" or "πακέτο" instead of "φάκελος/πακέτο"

I have tried to comment on some of them. There are some other that need to be changed.

[tdonohue]

@kstamatis : Could you re-review this for us? Looks like the changes you suggested have been applied.

[kostisalex]

@kstamatis @tdonohue @kominis
Some translations (pool, embargo,bit etc) make no sense (or are difficult to understand) if they are translated in greek. So, these mainly technical terms, remain in english inside the greek file : So "Back to pool"->"Πίσω στο pool" or "embargo period"->"Περίοδος embargo" ....
Thanks @kstamatis for your comments. I have accepted all of them and integrated in the translation file. Concerning some terms such as "item", that can have multiple different translations in greek ("Τεκμήριο", "Αντικείμενο", "Εγγραφή" κ.λπ. ), I adopted the one that I use myself (in this case "Τεκμήριο") and most of the times is the same with the Greek translation of this term in older versions of Dspace (v6)

[kstamatis]

Everything seems OK. My last review comments (pull request: kostisalex#1) were accepted by @kostisalex.

[kostisalex]

Everything seems OK. My last review comments (pull request: kostisalex#1) were accepted by @kostisalex.

Thanks @kstamatis @tdonohue for your review and changes. I guess this PR will be useful to all greek Dspace community

[tdonohue]

👍 Thanks @kostisalex ! I gave this a quick test just to verify it's working & it is. Merging as this has several approvals now