Accessibility Enhancements

We just made some changes that will dramatically **improve the Sudowrite user experience for folks using screen readers**. For starters, we've improved or added screen reader labels for: Home page * Settings menu * Help menu * Credit symbol in Recent Activity * Create New Project * Story Bible, Canvas, and Project Action icons on the Project card Editor * Write, Rewrite, and Describe dropdowns * Create New Document and Import * History card actions: Like, Dislike, Add to Favorites * Collapse icons for the left bar, right bar, and top menu * Recent and Favorites in the History (Right) Bar * Copy to Clipboard and History in Story Bible Additionally, projects on the Project list are now labeled as projects, and include a title at the top level. Several redundant icons have also been hidden from screen readers to reduce the amount of non-interactive elements and streamline the experience.