Update `text` functions to `html` to support inserting the `span` elements
Specify `html: false` for various instances where a `span` is not desired, e.g. `placeholder` and `title` attributes
Consolidate localization behavior and init to a coreLocalizer function and singleton
Explicitly support `en-US` locale
Rename coreData to coreFileFetcher and export a singleton rather than using a property of coreContext
Add `apiConnections` property of coreContext to simplify adding a source switcher
Replace some init functions with re-callable, promise-supporting `ensureLoaded` functions
Make coreContext itself load the UI if a container has been specified at init time
Fix code tests
- Makes the "Sidebar" toggle button permanent but removes the label
- Did some things to the "Save" button to make it the same width whether there
is a count or not (prevents the buttons from jumping when pressing undo/redo)
- Removes a lot of the floated col rules that aren't used much anymore
A few things going on in this commit:
- uiConfirm already has an OK button, so I'm trying to use that instead of uiModal.
- The confirm OK button cancels, which is maybe a problem. I might change it.
- Dispatch a change event instead of trying to call a function back in uiBackground
- Remove some of the custom css, since we already have some shared button css
- add utilNoAuto to textarea (this just prevents autocomplete and other
annoying behaviors especially in Safari)
- Attempt fast save first, only perform conflict resolution if necessary (re: #3056)
- Block reentry of save, and dont keep focus on save button (closes#4641)
- Refactor modeSave() for code clarity (avoid shared state in closure variables)
