[BUG] Page "register/abort" not found

[freimaks]

Smartphone / Desktop: Desktop

• NodeBB version: 1.14.3
• NodeBB git hash: (git rev-parse HEAD)
• Device: PC
• OS: Windows 10
• Browser: Vivaldi

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Describe the bug
Page for abort registration does not work.

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Additional context / Screenshots
File registerComplete.tpl from nodebb-theme-persona has special form for cancel registration:

<form role="form" method="post" action="{config.relative_path}/register/abort">
	<p class="text-center">
		<button class="btn btn-link">[[register:cancel_registration]]</button>
	</p>
</form>

File registerComplete.tpl from nodebb-theme-oxide has only link to register/abort. And this link get page 404.
To correct this error, we can simply return a separate form for aborting registration:

<form role="form" method="post" action="{config.relative_path}/register/complete/?_csrf={config.csrf_token}" enctype="multipart/form-data">
	{{{each sections}}}
	<div class="row">
		<div class="col-xs-12 col-sm-8 col-sm-offset-2">
			<div class="panel panel-default">
				<div class="panel-body">
					@value
				</div>
			</div>
		</div>
	</div>
	{{{end}}}

	<div class="row">
		<div class="col-xs-12 col-sm-8 col-sm-offset-2">
			<button class="btn btn-primary btn-block">Submit</button>
			<!-- Remove this code
			<p class="text-center">
				<br />
				<a target="_top" href="{config.relative_path}/register/abort">[[register:cancel_registration]]</a>
			</p>-->
		</div>
	</div>
</form>

<!-- Add this code -->
<form role="form" method="post" action="{config.relative_path}/register/abort">
	<p class="text-center">
		<button class="btn btn-link">[[register:cancel_registration]]</button>
	</p>
</form>