fix: Move "forgot_password"-link to fix login tab order

Previously hitting tab in the username field set the focus to the "forgot password" link. Only on the next hit the password field was selected.
This is an issue for some password managers (keepassdx android keyboard) and not as nice for accessibility.
Now the forgot link is below the sign up link at the bottom of the page.
Using "tabindex" didn't work properly with the templating engine because many elements get assigned a tabindex of "0" by default disrupting the tab selection sequence.

templates/user/auth/signin_inner.tmpl

@@ -17,9 +17,8 @@
 				<input id="user_name" type="text" name="user_name" value="{{.user_name}}" autofocus required>
 			</div>
 			{{if or (not .DisablePassword) .LinkAccountMode}}
-			<div class="required field {{if and (.Err_Password) (or (not .LinkAccountMode) (and .LinkAccountMode .LinkAccountModeSignIn))}}error{{end}} form-field-content-aside-label">
+			<div class="required field {{if and (.Err_Password) (or (not .LinkAccountMode) (and .LinkAccountMode .LinkAccountModeSignIn))}}error{{end}}">
 				<label for="password">{{ctx.Locale.Tr "password"}}</label>
-				<a href="{{AppSubUrl}}/user/forgot_password">{{ctx.Locale.Tr "auth.forgot_password"}}</a>
 				<input id="password" name="password" type="password" value="{{.password}}" autocomplete="current-password" required>
 			</div>
 			{{end}}
@@ -52,11 +51,15 @@
 <div class="ui container fluid">
 	{{template "user/auth/webauthn_error" .}}
 
-	{{if .ShowRegistrationButton}}
 		<div class="ui attached segment header top tw-max-w-2xl tw-m-auto tw-flex tw-flex-col tw-items-center">
+			{{if .ShowRegistrationButton}}
 			<div class="field">
 				{{ctx.Locale.Tr "auth.hint_register" (printf "%s/user/sign_up" AppSubUrl)}}
-			</div>
+				<br>
 			</div>
 			{{end}}
+			<div class="field">
+				<a href="{{AppSubUrl}}/user/forgot_password">{{ctx.Locale.Tr "auth.forgot_password"}}</a>
+			</div>
+		</div>
 </div>