Add i18n to default map

[nick-denry]

I guess it is good to use another languages instead of fixed 'de' for the default map.

I'm not definitely sure if composition language is ok for the block view.

--

Set Google maps language to current compostion language instead of fixed 'de'.

[nadar]

@nick-denry good point! yes the composition should be used, since 1.0.5 we should use Yii::$app->composition->langShortCode but your solution would work too.

You can close the issue #7 as this pull request is threated like an issue as well.

Maybe we should define the google maps i frame url inside the extraVars() so we don't mix between php and angular/js. And it would be more easy to maintain this in future.

Please also add a changelog entry here https://github.com/luyadev/luya-bootstrap3/blob/master/CHANGELOG.md.

Thank you for helping us making LUYA better! If you have any questions regarding issue, pr or changelog, just let me know.

[nadar]

Register an extra var like embedUrl which is resolved by a function like getEmbedUrl() in order to determine the iframe url (which is now done inside the view).

<? if ($this->cfgValue('snazzymapsUrl', false)): ?><?= $this->cfgValue('snazzymapsUrl', '') ?><? else: ?>https://maps.google.com/maps?f=q&source=s_q&hl=<?= \Yii::$app->composition['langShortCode']; ?>&geocode=&q=<?= $this->extraValue('address');?>&z=<?= $this->extraValue('zoom');?>&t=<?= $this->extraValue('maptype')?>&output=embed<? endif; ?>

[nadar]

@nick-denry regarding the extra var embed Url:

I just want to remove all this concant code from the view file. So we could contact and make the else if inside a method inside the block and deliver the result trough extraVars. So its easy to embed inside the admin and frontend.

public function extraVars()
{
    return ['embedUrl' => $this->getEmbedUrl()];
}

public function getEmbedUrl()
{
   if ..

  else 

   return 'the embed map url'
}

Do you know what i mean?