Add "Dismiss/Show" Feature about oc-gdpr-plugin

Consent by LAW

Also following on from the above and reading the READ.ME page, maybe it's my misunderstanding but I strongly feel this section is wrong and not needed, see screenshot:

An example which does not pass the law

1. A user goes to the first webpage and sees the Banner.
2. A user does NOT select a "Consent Option" from the banner and goes to the second webpage.
3. The second webpage does not show the Banner.

An example which does pass the law

1. A user goes to the first webpage and sees the Banner.
2. A user DOES select a "Consent Option" from the banner and goes to the second webpage.
3. The second webpage does not show the Banner.

The LAW

The Banner MUST show on every webpage until the user selects one of the following "Consent Options" these being: Accept, Reject or Dismiss. Or they click on the "Advanced Settings" link and Save the Options there.

Therefore I think this is not needed: https://github.com/OFFLINE-GmbH/oc-gdpr-plugin#ignore-behaviour

[CptMeatball]

Agree with the dismiss option!

About the ignore behaviour;
I think more people should comment on this, as the gdpr is one of the most misunderstood laws in terms of what is and what is not allowed. So more people should cast a vote about it and see what is necessary.

@tobias-kuendig Please can you, finish off the PHP Code. The "onDismiss" function and "onShow" function(s) needs to be coded (for users to add a button to re-show the banner and/or hide the banner). I started it and wrote the ccs code and the component code - just not the php functions as I thought best for you to do that.