Move components and update CoreComponents handling

[TheFirstAvenger]

Moves components into components subdirectory, fixes #1. Rename HTML.ex, fixes #2. Update handling of CoreComponents.

[merhard]

I was expecting the structure to be the following:

lib/
  - components/
    - station_ui/
      - station_ui.html.ex
      - html/
        - {<component files>}.ex

NOTE the downcased html folder name.

Also which of the following should it be?

1. lib/components/station_ui.html.ex
2. lib/components/station_ui/station_ui.html.ex

[bcardarella]

lib/components/core_components_station_ui.html.ex

This way it is sorted next to other core component files.

[bcardarella]

ehhhh, now that I'm seeing it in print I'm less convinced. Thoughts?

[TheFirstAvenger]

@merhard I actually have HTML lowercased on my end, but didn't have git config core.ignorecase false set. Just fixed that.

If we have it in it's own subfolder in components, there should only be our stuff in there, making our upgrade path easier in the future as we own that directory.

@bcardarella I feel calling it core_components_station_ui is a disservice because yes it replaces the core_components, but that is just a fraction of what it does.