Add a cancel button to event edit & make buttons fixed

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/views/User/PasswordChange.vue

@@ -1,5 +1,5 @@
 <template>
-    <section class="section">
+    <section class="container">
         <nav class="breadcrumb" aria-label="breadcrumbs">
             <ul>
                 <li><router-link :to="{ name: MyAccountRouteName.UPDATE_IDENTITY }">{{ $t('My account') }}</router-link></li>

js/src/views/User/PasswordReset.vue

@@ -1,5 +1,5 @@
 <template>
-  <section class="columns is-mobile is-centered">
+  <section class="container columns is-mobile is-centered">
     <div class="card column is-half-desktop">
       <h1>
         {{ $t('Password reset') }}

js/src/views/User/Register.vue

@@ -1,5 +1,5 @@
 <template>
-  <div>
+  <div class="container">
     <section class="hero">
       <div class="hero-body">
         <h1 class="title">

js/src/views/User/Validate.vue

@@ -1,5 +1,5 @@
 <template>
-  <section>
+  <section class="container">
     <h1 class="title" v-if="loading">
       {{ $t('Your account is being validated') }}
     </h1>