Switching Zoom in/out button from +/- to Awesome Icons

[matt-dahlgren]

Proposed Changes

Changing the Zoom In and Zoom Out buttons from + and - to magnifying-glass-plus and magnifying-glass-minus from the Awesome React font.
...

Before:

After:

After and Hover Plus:

After and Hover Minus:

Type of Change

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Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)
🎨 User interface change (change to user interface; provide screenshots)	X
♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)
📦 Dependency update (change that updates a dependency)
🔧 Internal (change that only affects developers or continuous integration)

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