Wholesale cleanup of nodejs related components

- remove redundant cite
- support Basher
- add nenv plugin
- uplift nodenv to follow newer pattern and standard
- ensure node components play well with *env tools

test/lib/search.bats

@@ -47,7 +47,7 @@ function local_teardown {
   run _bash-it-search rails ruby gem bundler rake --no-color
 
   assert_line -n 0 '      aliases: bundler   rails   '
-  assert_line -n 1 '      plugins: chruby   chruby-auto   rails   ruby   '
+  assert_line -n 1 '      plugins: chruby   chruby-auto   nenv   nodenv   rails   ruby   '
   assert_line -n 2 '  completions: bundler   gem   rake   '
 }
 
@@ -55,7 +55,7 @@ function local_teardown {
   run _bash-it-search rails ruby gem bundler rake -chruby --no-color
 
   assert_line -n 0 '      aliases: bundler   rails   '
-  assert_line -n 1 '      plugins: rails   ruby   '
+  assert_line -n 1 '      plugins: nenv   nodenv   rails   ruby   '
   assert_line -n 2 '  completions: bundler   gem   rake   '
 }