entity_browser 8.x-1.0-alpha8

Entity browser 8.x-1.0-beta8
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- #2781125 by Berdir: Delete button in file browser widget not working.
- #2778923 by marcoscano, slashrsm: Propagate field cardinality to Entity browser when using it for selecitng existing entities on behalf of IEF.
- #2786851 by reekris, samuel.mortenson: Fix Removing entities in FileBrowserWidget is broken.
- #2786141 by Leksat: Correctly handle Enter key in views exposed form.
- #2781929 by SteffenR: Fix - Adding already existing entities via entity_browser / entity_form causes javascript error
- #2765789 by mtodor: Make functional test more robust.
- #2765789 by slashrsm, mtodor, Denchev, chr.fritsch: Create basic functional havascript test.
- #2779547 by dawehner: Provide an ID for the iFrame to support webdriver based tests.
- #2766267 by chr.fritsch: Fix - Wizard trail disappears if the Selection Display is multi-step.
- #2779001 by chr.fritsch: Fix - Modal display broken after ordering entities
- #2777747 by slashrsm: Fix - entity_form widget not updating after entity selection in entity_browser
- #2767737 by mtodor, webflo, slashrsm: Allow passing existing selection from field widget.
- #2778211 by paranojik: Fix - Entity form widget does not include button to save new entity.