SideEx team contribution: license, notice and credit about selenium-ide

[tourdedave]

I followed up with the Software Freedom Conservancy (SFC) on this issue to get their take on best practice for managing the copyright notices in existing source code files as they change over time.

They said we should keep original copyright notices and recommended we review a white paper that discusses this topic (link). It's for a slightly different context (e.g., GPL) but it should still be relevant here.

And for what it's worth, they also said that nearly every project in FLOSS has copyright notices that are not ideal and to get them in a pristine and "great" state is generally more work than developers want to do.

[tourdedave]

The tl;dr from the Software Freedom Conservancy is this:

1. Leave existing copyright notices intact.
2. When creating new files in the project, use the Selenium project's stated license header (link)
3. Reconcile copyrights at a later date in batch (if need be).

The SFC has queued up my request for legal review just to confirm, but it will take at least a month before we get a "belts and suspenders" answer. For now, though, the above should be sufficient.