Changed form of i tag.

src/client/js/components/InstallerForm.js

@@ -35,26 +35,26 @@ class InstallerForm extends React.Component {
 
         <form role="form" action="/installer/createAdmin" method="post" id="register-form">
           <div className={'input-group' + hasErrorClass}>
-            <span className="input-group-addon"><i className="icon-user"></i></span>
+            <span className="input-group-addon"><i className="icon-user" /></span>
             <input type="text" className="form-control" placeholder={ this.props.t('User ID') }
               name="registerForm[username]" defaultValue={this.props.userName} onChange={this.checkUserName} required />
           </div>
           <p className="help-block">{ unavailableUserId }</p>
 
           <div className="input-group">
-            <span className="input-group-addon"><i className="icon-tag"></i></span>
+            <span className="input-group-addon"><i className="icon-tag" /></span>
             <input type="text" className="form-control" placeholder={ this.props.t('Name') }
                    name="registerForm[name]" defaultValue={ this.props.name } required />
           </div>
 
           <div className="input-group">
-            <span className="input-group-addon"><i className="icon-envelope"></i></span>
+            <span className="input-group-addon"><i className="icon-envelope" /></span>
             <input type="email" className="form-control" placeholder={ this.props.t('Email') }
                    name="registerForm[email]" defaultValue={ this.props.email } required />
           </div>
 
           <div className="input-group">
-            <span className="input-group-addon"><i className="icon-lock"></i></span>
+            <span className="input-group-addon"><i className="icon-lock" /></span>
             <input type="password" className="form-control" placeholder={ this.props.t('Password') }
                    name="registerForm[password]" required />
           </div>
@@ -76,7 +76,7 @@ class InstallerForm extends React.Component {
 
           <div className="input-group m-t-30 m-b-20 d-flex justify-content-center">
             <button type="submit" className="fcbtn btn btn-success btn-1b btn-register">
-              <span className="btn-label"><i className="icon-user-follow"></i></span>
+              <span className="btn-label"><i className="icon-user-follow" /></span>
               { this.props.t('Create') }
             </button>
           </div>