[Fix] Prevent storing external urls for stores

[arielj]

This PR fixes #3200

We now store the last url visited when navigating the stores, but we can store external urls and then there's no way to go back to the store.

With this PR we now only store urls that are allowed instead of storing everything. And in case a user already has an invalid url stored, we now also check to only re-open in the url if it's one of the allowed.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[CommandMC]

Storing the URLs inside sessionStorage instead might be safer. They don't have to persist between restarts, right?

[arielj]

Storing the URLs inside sessionStorage instead might be safer. They don't have to persist between restarts, right?

I meant this to be stored between restarts, I didn't think about making it not persistent. Not sure what users will expect though.

I guess we can wait for feedback. In the issue I was fixing with that feature both tings were mentioned: storing between restarts as not necessary and also as someone mentioned to support that after restarts, so I don't know haha.

[flavioislima]

I vote for it to NOT be persistent across restarts.
It could be safer in case something goes wrong during the navigation.

[imLinguin]

I agree, there is no need for that to be persistent across restarts. I think it's even nicer for UX

[arielj]

changed it to use sessionStorage