Cache - Language independent caching

[arantzaetxebarria]

Allow the user to activate language caching by selecting a specific language.
This way you are not forced to cache everything on a massive scale.

The following steps will be carried out:

1. Investigation of the cache status in all languages (cache all button).
2. Based on the results obtained, create a selection combo of languages available in the instance, to cache each language independently.

[unaibrrgn]

We implemented a new button in the data export section in the backend instance. Before you could only cache the application in all the languages and in the master language. Now you can still cache all the languages but we implemented a language selector instead of the master language button, where you can select the languages to be cached.