This reverts commit 2438ea19.

* #342

* #174
* FormValidation hook
* StateRecord hook
* Bootstrap component (button, formInput, formTextarea, baseModal,
spinner, button)
* enhanced SASS members

This is currently added only to settings of a corpus.

* #308 (2): resolve re-render issue

* #308: second iteration
* resolve UI left/right placement

Also, implemented list selection on the Corpus/New screen.

This way we can have a handle of the errors in the high-level
components. Before they were implicitly discarded.