Replace forked react-bootstrap with official

[uaktags]

The forked react-bootstrap is not only outdated, it's not actively tracked in a git repository nor can it be drop-in replaced with the official package due to the extensions.

Instead of packaging the customized bootstrap components with a modified react-bootstrap package, just extend the official one. This would help figure out and separate where issues are arising: Fontawesome for example in another issue is reported on the old versions of react-bootstrap, but it's unclear with how themesberg/react-bootstrap which version its targetting, if its a themesberg issue, a react-bootstrap issue, a bootstrap issue, or a fontawesome issue.