correct english of snippet_missing_title
[3.0] Add Italian translation
Moved testSubject dependency from environment build to envionment isolation

It makes much more sense to isolate environment according to test subject rather than building
it with one. Basically, environment building is done using suite only, because it makes sense.
Environments are logical continuations of suite, but could be isolated for specific subject.
Merge pull request #365 from bendavies/i18-english

correct english of snippet_missing_title
Merge pull request #366 from dlondero/patch-1

[3.0] Add Italian translation
French translation
Merge pull request #370 from tgalopin/3.0

[3.0] French translation
Reformatted a bit the i18n file and reordered locales
Add Polish translation
Merge branch 'polish_translation' into 3.0 (PR #364)

This PR has been rebased before merging it. Closes #364
Fix some typos in the french translation
Added german translation
Merge branch 'german_translation' into 3.0 (PR #369)

This PR was squashed before merging. Closes #369
Merge pull request #375 from integrateurxhtm/patch-1

Fix some typos in the french translation
Translation for pt-BR
Merge branch 'portuguese_translations' into 3.0 (PR #376)

This PR was rebased before merging it. Closes #376
Portuguese translations
changed tem to contem
Changed `Snippets` to `Exemplos`
Merge branch 'portuguese_translations' into 3.0 (PR #367)

This PR has been rebased before merging it. Closes #367