Resizing and url integration

[kaldis-berzins]

By submitting this PR, I am indicating to the Numberscope maintainers that I have read and understood the contributing guidelines and that this PR follows those guidelines to the best of my knowledge. I have also read the pull request checklist and followed the instructions therein.

---

This branch is third in the PR merge chain.

Resizing and URL integration

Changes to tabs

• Added buttons that let you control the tabs without dragging
• Rewrote large sections of the tab resizing code. This was in order to support minimizing.
• Added a highlight to the tab that is currently selected.
• Initial mobile compatibility in the style section of Tab.vue
  • This is changed in later PRs, but the majority of this css remains.

    Resizing

• Added a reset function to a specimen. This is a hard reset that is used when the specimen is resized and it doesn't override resized function.
• Added a resized function to both specimens and visualizers. It is not required for visualizers as they can just not do anything and the specimen will hard reset them.

  Scope

• Adds rudimentary mobile support. This doesn't work entirely, and gets changed substantially in later PRs, so reviewing here probably isn't worth your time.

[gwhitney]

We are in the same situation with this PR as its predecessor. Beginning the cleaning process now.

[gwhitney]

Closing in favor of #366.