This commit only renames things, changes no logic. Any mention of "book", "view", or "mode" is renamed in relation to "spreads".
The AnchoredBox.jsx file is renamed to Anchored.jsx
Extra icons are deleted, and the remaining ones are renamed.
the `-alt` icons have better sizing/readability than the originals. The originals likely will be removed.
Also adds back in 'fit-width' icon which was mistakenly overwritten earlier.
Removes icons as components, uses mask-image instead.
Sets a size on the .fac icons to 1em so by default they are 1em and retain their aspect ratio.
rename the icon files for consistency.
New icons for Zoom to Fit, and Fit Width buttons. Used SVGR online tool to create react components and then combined them.
If doing in future, be sure to set currentColor on `fill` property in the SVG itself. Make the SVGs as closed curves only (don't rely on stroke). set only a width property, not height.
Víctor Losada Hernández