ConfirmDangerModal window added. It will be used for confirmation of dangerous actions

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/javascripts/confirm_danger_modal.js.coffee

+class ConfirmDangerModal
+  constructor: (form, text) ->
+    @form = form
+    $('.js-confirm-text').text(text || '')
+    $('.js-confirm-danger-input').val('')
+    $('#modal-confirm-danger').modal('show')
+    project_path = $('.js-confirm-danger-match').text()
+    submit = $('.js-confirm-danger-submit')
+    submit.disable()
+
+    $('.js-confirm-danger-input').on 'input', ->
+      if rstrip($(@).val()) is project_path
+        submit.enable()
+      else
+        submit.disable()
+
+    $('.js-confirm-danger-submit').on 'click', =>
+      @form.submit()
+
+@ConfirmDangerModal = ConfirmDangerModal

app/views/shared/_confirm_modal.html.haml

+#modal-confirm-danger.modal.hide{tabindex: -1}
+  .modal-dialog
+    .modal-content
+      .modal-header
+        %a.close{href: "#", "data-dismiss" => "modal"} ×
+        %h4 Confirmation required
+
+      .modal-body
+        %p.cred.lead.js-confirm-text
+
+        %p
+          This action can lead to data loss.
+          To prevent accidental actions we ask you to confirm your intention.
+          %br
+          Please type
+          %code.js-confirm-danger-match #{phrase}
+          to proceed or close this modal to cancel
+
+        .form-group
+          = text_field_tag 'confirm_name_input', '', class: 'form-control js-confirm-danger-input'
+        .form-group
+          = submit_tag 'Confirm', class: "btn btn-danger js-confirm-danger-submit"