Node id should be checked on startup

[hansieodendaal]

Describe the bug When a node starts up with an incompatible own node id, it will continue without an error, and not be able to sync. Furthermore, it should also mark or delete peers with incompatible node ids from its peer database and not propagate those to the rest of the network.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

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Desktop (please complete the following information):

• OS & Version: [e.g. iOS 10.2.1]
• Browser & Version [e.g. chrome v71.0.12345]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser & Version [e.g. stock browser v0.1.2]

Additional context Add any other context about the problem here.