/category/add: prohibit repeated special characters

[php-coder]

When user specifies the names of category during its creation, we should validate these names and prohibit the repetition of the hyphen (for example: te--st). Also we should add the converter that will replace two and more spaces into single.

Note that we should apply this conversion/validation to the both fields.

What should be done:

• Add integration tests
• Add validation (@Pattern will be helpful)

(Extracted from #403)

[bodom91]

Hmm...
Maybe I will need add warning message - Value must not contain repetition of hyphen
Perhaps user want name te--st but not te-st ...
What do you think about that ?

[php-coder]

Maybe I will need add warning message - Value must not contain repetition of hyphen

Warning means that user can ignore it, that this is something optional. But it should be mandatory. To understand more about why we need it, read my comments in the #403

Perhaps user want name te--st but not te-st ...

Note that now we're talking about country name (and not the user's login). Do you know the country that has two hyphens in its name?

P.S. "user wantS"

[bodom91]

The title of issue /category/add: prohibit repeated special characters
???))

[php-coder]

Ah, yes, I'm sorry, I've mixed the issues because they're similar. But the point is still valid: name of the category is something meaningful and from the real life (for example, Sport, Cars, Holidays, etc).

[bodom91]

Ok, will be done. =)