All pages: Creation of empty tags is enabled

[manrodrigues]

It is possible to create tags just with spaces " ":" ". Tags should have a regex (it's not good practice to allow the user to put whatever they want.)

[manrodrigues]

[manrodrigues]

[manrodrigues]

This behavior is occurring on sinks as well

[gpazuch]

I believe this shouldn't happen after PR#550 @iatdaitan

[manrodrigues]

Not working yet

[manrodrigues]

Tags should accept 2 behaviors: 1) none tag; 2) valid regex tag;

[manrodrigues]

ok

[manrodrigues]

Creation of tags with empty values are accepted yet.

We need to guarantee that the value is also not empty, though. I'll open a new issue related.