Show all wf options when node is not a root node

* Edge type of root node is always "always"
* If node is not a root node, show all options: always, success, fail
* Remove edge conflict logic

awx/ui/client/features/templates/templates.strings.js

@@ -112,7 +112,6 @@ function TemplatesStrings (BaseString) {
         RUN: t.s('RUN'),
         CHECK: t.s('CHECK'),
         SELECT: t.s('SELECT'),
-        EDGE_CONFLICT: t.s('EDGE CONFLICT'),
         DELETED: t.s('DELETED'),
         START: t.s('START'),
         DETAILS: t.s('DETAILS'),