Add tag info to newcomer statistics

[sagesharp]

Idea

When a newcomer approaches a new project, they often don't know what kinds of tasks to look for. Many projects have an "easy" tag, but others have more nuanced tags based on what part of the code or skillset is needed. Some people choose to take on hard bugs or features on their first contribution because they look interesting. They may or may not succeed. After newcomers complete their first simple pull requests, they may want a medium-sized project, but again, they may not know where to start.

Hypothesis testing

Question: For all newcomers (active for < 1 year), which pull requests that reference issues with tags are more likely to get merged?