Fix chemical search, review flow, scan feedback, CAS editing, item modal, and move filtering to a sidebar

Searching for a chemical now finds every grade and bottle of it, even when a label reads differently. The one-by-one review screen no longer flashes a loading screen between bottles, and now shows the chemical group and grade a bottle belongs to, with links to sibling grades and bottles. Tapping a saved capture on the scan screen opens what was actually read from it, without leaving the scan screen. A chemical's CAS number can also be corrected from its own page or its chemical group page, not just from a bottle's edit screen. The bottle edit screen is wider on a laptop and only shows the fields a label actually filled in, with an Add field menu for the rest. Filtering the inventory list now opens in a sidebar docked to the edge of the screen instead of a box floating over the middle of it, so the list stays visible while you narrow it.