Added "Zoom All", "Orient Axes", "Reset Axes" buttons (#776)

CHANGELOG.md

src/mol-math/linear-algebra/3d/mat3.ts

src/mol-plugin-state/manager/camera.ts

src/mol-plugin-state/manager/focus-camera/orient-axes.ts

src/mol-plugin-ui/left-panel.tsx

src/mol-plugin-ui/skin/base/components/viewport.scss

src/mol-plugin-ui/viewport.tsx

src/mol-plugin-ui/viewport/simple-settings.tsx

src/mol-plugin/behavior/static/camera.ts

src/mol-plugin/commands.ts