Progress of adaptation:
- [x] Questions
- [x] Quiz
- [ ] Index
- [ ] Instructions
- [ ] Results

    Progress of adaptation:
    - [x] Questions
    - [x] Quiz
    - [x] Index
    - [x] Instructions
    - [ ] Results

Progress of adaptation:
  - [x] Questions
  - [x] Quiz
  - [x] Index
  - [x] Instructions
  - [x] Results

In order to load the namespaces and do the string binding, just load the i18n.js file on the HTML and call the i18n_load_ns with the namespaces notation found [here](http://i18next.com/translate/namespace/).
To fill the string data (e.g. "12 apples), the element must adhere to the following notation (see HTML data-* attributes):

```html
<p data-i18n="apple_count" data-amount="18"></p>
```
```json
{ "apple_count": "{{amount}} apples" }
```

To refresh the string, alter the data-* attribute accordingly and call `i18n_ready()`.

…lation

Corrections according to the ortographic agreement and changes on the master branch

To localize images, add the file-[lng].svg to the value_images/ diretory and add an entry on the corresponding translation.json:

    "file.svg": "file-[lng].svg"

This reverts commit 144b16c.

Added comments to `i18n.js` on how to block unfinished translations from being published

This reverts commit f7fe42b.

Translation of the remaining questions

Spanish translation, thanks to @locoluis