Adding the ItemGroup for msbuild scripts that should be executed if an error occurs during the build process.

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Adding the error target that will be invoked if there is an error during the build process.
Expanding the <MsBuild> target with all the available attributes so that it is obvious that the values are chosen explicitly

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Adding the ItemGroup that will contain the MsBuild scripts which will be executed if one of the deployment steps fails.

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Adding the OnError task to the deploy script.

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Removing unnecessary comments.
Merge branch 'feature/onfailure' into develop