Circuit Editor Follow Ups

[ScottCarda-MS]

Improvements:

• Use KaTex math fonts instead of Arial (Use LaTeX fonts for math symbols in circuit diagrams #2327)
• Use dagger symbol instead of apostrophe for adjoint (Use LaTeX fonts for math symbols in circuit diagrams #2327)
• Change hyperlink to point to circuit-editor wiki instead of circuit wiki when editing (Change Editor "Learn More" Link #2322)
• Add to the wiki mention of support for jupyter notebook scenario
• Add to the wiki mention of standalone circuit experience
• Add a "π/2" button to argument input
• Allow for "pi" in argument input
• Swap control and target instead of canceling action when moving target onto control or vice versa (Swap Control and Target #2311)
• Fix bug with copy-move control (Swap Control and Target #2311)
• Don't allow ".2" in argument input
• Investigate compacting the UI to try to fit ~8 qubits on screen without needing to zoom

Code Improvements:

• Remove lodash dependency (Circuit Code Improvements #2329)
• Rename Metadata in npm to a more useful name (Circuit Code Improvements #2329)
• Use CSS namespace to avoid the editor's CSS affecting other components (Circuit Code Improvements #2329)
• Add additional test to front-end components

Accessibility:

• Increase size of ending dropzone
• Removed focus for any button during argument input
• Add "Help" or "Info" popup for explaining how to use the tool
• Visual tips for incorrect input in the argument input
• Visual indication for invalid drop location while dragging