describe Login Name limitations on Registration form and Add Local Auth form (#9896)

* describe Login Name limitations on registration form and Add Local Auth form

* adjust text in response to this change: c69687f935

* update max length

website/client/components/settings/site.vue

@@ -118,6 +118,7 @@
           hr
           div(v-if='!user.auth.local.username')
             p {{ $t('addLocalAuth') }}
+            p {{ $t('usernameLimitations') }}
             .form(name='localAuth', novalidate)
               //-.alert.alert-danger(ng-messages='changeUsername.$error && changeUsername.submitted') {{ $t('fillAll') }}
               .form-group

website/client/components/static/home.vue

@@ -23,6 +23,7 @@
             .strike
               span {{$t('or')}}
             .form(@keyup.enter="register()")
+              p.form-text {{$t('usernameLimitations')}}
               input.form-control(type='text', placeholder='Login Name', v-model='username', :class='{"input-valid": username.length > 3}')
               input.form-control(type='email', placeholder='Email', v-model='email', :class='{"input-invalid": emailInvalid, "input-valid": emailValid}')
               input.form-control(type='password', placeholder='Password', v-model='password', :class='{"input-valid": password.length > 3}')

website/common/locales/en/front.json

@@ -298,6 +298,7 @@
   "signUpWithSocial": "Sign up with <%= social %>",
   "loginWithSocial": "Log in with <%= social %>",
   "confirmPassword": "Confirm Password",
+  "usernameLimitations": "Login Name must be 1 to 20 characters long, containing only letters a to z, or numbers 0 to 9, or hyphens, or underscores.",
   "usernamePlaceholder": "e.g., HabitRabbit",
   "emailPlaceholder": "e.g., rabbit@example.com",
   "passwordPlaceholder": "e.g., ******************",