Added new kb article resolving-invalid-license-watermark-telerik-reporting-pdfs

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[dnikolov-prg]

The article should be redesigned as the problem it tries to solve is not specific to PDF rendering, but to Website type projects. We should

1. Clarify that this article solves the issue of using Telerik Reporting in a Website project. The name of the md file itself should be changed too. For example: "resolving-invalid-license-watermark-in-website-projects.md". All the metadata should be edited to affect this as well.
2. We should inset an image after the first step in the solution, which displays the file structure and where exactly TelerikLicense.vb/TelerikLicense.cs will be.
3. We should also show what the code in that file looks like without embedding an actual script key.
4. The 4th step in the solution must be edited to mention that this solution relies on using the script key instead of the license key.