FE: Import project page - fix console warnings and errors
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Various warnings and errors observed on master in console. on the page [http://127.0.0.1:3000/projects/new#import_project](http://127.0.0.1:3000/projects/new#import_project)
**HTML warnings**
```
[DOM] Found 4 elements with non-unique id #new_project: (More info: https://goo.gl/9p2vKq)
<form class="new_project gl-mt-3" id="new_project" action="/projects" accept-charset="UTF-8" method="post">…</form>
<form class="new_project" id="new_project" action="/projects" accept-charset="UTF-8" method="post">…</form> <form class="new_project" id="new_project" action="/projects" accept-charset="UTF-8" method="post">…</form>
<form class="new_project gl-show-field-errors js-project-import" id="new_project" action="/projects" accept-charset="UTF-8" method="post">…</form>
```
```
Found 4 elements with non-unique id #project_ci_cd_only: (More info: https://goo.gl/9p2vKq)
<input value="false" autocomplete="off" type="hidden" name="project[ci_cd_only]" id="project_ci_cd_only">
<input value="false" autocomplete="off" type="hidden" name="project[ci_cd_only]" id="project_ci_cd_only">
<input value="true" autocomplete="off" type="hidden" name="project[ci_cd_only]" id="project_ci_cd_only"> <input value="false" autocomplete="off" type="hidden" name="project[ci_cd_only]" id="project_ci_cd_only">
```
There are at least 10 warnings like the above regarding ids.
**Vue warnings**
<!--template sourced from https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/issue_templates/Default.md-->
```
Injection "identityVerificationRequired" not found
found in
---> <NewNamespacePage>
[Vue warn]: Property or method "identityVerificationRequired" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://v2.vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.
```
issue