Feature/use hcaptcha if bot (#1089)

* Add captcha to login page

* pull out shared method

* Update parse parameter logic

* Load captcha

* responsive iframe height
* correct i18n
* site key provided by server

* Fix locale parsing

* Add optional success callbackUri

* Make captcha connector responsive

* Handle parameter versions in webauthn

* Move variables to top of script

* Add captcha to registration

* Move captcha above `<hr>` div to be part of input form

* Add styled mobile captcha connector

* Linter Fixes

* Remove duplicate import

* Use listener to load captcha

* PR review

src/app/accounts/register.component.html

@@ -121,6 +121,7 @@
                                     <input id="hint" class="form-control" type="text" name="Hint" [(ngModel)]="hint">
                                     <small class="form-text text-muted">{{'masterPassHintDesc' | i18n}}</small>
                                 </div>
+                                <div [hidden]="!showCaptcha()"><iframe id="hcaptcha_iframe" height="80"></iframe></div>
                                 <div class="form-group" *ngIf="showTerms">
                                     <div class="form-check">
                                         <input class="form-check-input" type="checkbox" id="acceptPolicies"