feat: add export to file option and show metrics button

Fixes #55 (closed) and #56 (closed)

Short description of what this resolves:

Changes proposed in this pull request:

• Ability export data in .CSV, .XLS, .png and PDF formats. txt, doc(x), XML, and JSON formats are not supported as of yet without JQuery.
• Show metrics using AOSSIE Scholar Button [WIP]

Checklist

• My branch is up-to-date with the Upstream develop branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)