Delete unused Jinja macros and rearrange templates.

Templates and fragments that relate to specific resources (portfolios,
applications, task orders) should reside in directories named for the
relevant resource. This also matches the way the application routes are
distributed among modules named for each resource type.

templates/applications/fragments/add_new_environment.html

@@ -0,0 +1,34 @@
+{% from "components/alert.html" import Alert %}
+{% from 'components/save_button.html' import SaveButton %}
+{% from "components/text_input.html" import TextInput %}
+
+<new-environment inline-template>
+  <div>
+    <div v-if="open">
+      <form method='POST' id="add-new-env" action='{{ url_for("applications.new_environment", application_id=application.id) }}' autocomplete="off" enctype="multipart/form-data">
+        {{ new_env_form.csrf_token }}
+
+        <div class="accordion-table__item-content new-env">
+          {{ Alert(
+            title=("portfolios.applications.create_new_env" | translate),
+            message=("portfolios.applications.create_new_env_info" | translate )
+          ) }}
+          <div class="h4">{{ "portfolios.applications.enter_env_name" | translate }}</div>
+            {{ TextInput(new_env_form.name, label="", validation="requiredField") }}
+        </div>
+        <div class="panel__footer">
+          <div class="action-group">
+            {{ SaveButton(text=('common.save' | translate), element="input", form="add-new-env") }}
+            <a class='action-group__action icon-link icon-link--default' v-on:click="toggle">
+              {{ "common.cancel" | translate }}
+            </a>
+          </div>
+        </div>
+      </form>
+    </div>
+    <a class='icon-link icon-link__add' v-on:click="toggle">
+      {{ Icon('plus') }}
+      {{ "portfolios.applications.add_environment" | translate }}
+    </a>
+  </div>
+</new-environment>