@import play.api.data.Form
@import play.api.i18n.Messages
@import play.api.mvc.RequestHeader
@import controllers.AssetsFinder
@import helper._

@(signInForm: Form[app.controllers.AuthController.SignInFormData])(implicit request: RequestHeader, messages: Messages, assets: AssetsFinder)
@implicitField = @{ FieldConstructor(plainFieldConstructor.f) }
@main(messages("sign.in.title")) {
</br>
<div class="centering padding-50">
  <fieldset>
    <legend>
      <h5>@messages("sign.in.credentials")</h5>
    </legend>
      </br></br>
      @form(CSRF(app.controllers.routes.AuthController.signIn)) {
        <div class="mdl-textfield mdl-js-textfield">
          @inputText(
            signInForm("uid"),
            'class -> "mdl-textfield__input"
          )
          <label class="mdl-textfield__label">UserName</label>
        </div>
        <br/>
        <div class="mdl-textfield mdl-js-textfield">
          @inputPassword(
            signInForm("password"),
            'class -> "mdl-textfield__input"
          )
          <label class="mdl-textfield__label">Password</label>
        </div>
        <br/><br/>
        <button class="mdl-button mdl-js-button mdl-button--primary">
          @messages("sign.in")
        </button>
      }
  </fieldset>
</div>
}

@import play.api.data.Form
@import play.api.i18n.Messages
@import play.api.mvc.RequestHeader
@import controllers.AssetsFinder
@import helper._

@(signInForm: Form[app.controllers.AuthController.SignInFormData])(implicit request: RequestHeader, messages: Messages, assets: AssetsFinder)
@implicitField = @{ FieldConstructor(plainFieldConstructor.f) }
@main(messages("sign.in.title")) {
</br>
<div class="centering padding-50">
  <fieldset>
    <legend>
      <h5>@messages("sign.in.credentials")</h5>
    </legend>
      </br></br>
      @form(CSRF(app.controllers.routes.AuthController.signIn)) {
        <div class="mdl-textfield mdl-js-textfield">
          @inputText(
            signInForm("uid"),
            'class -> "mdl-textfield__input"
          )
          <label class="mdl-textfield__label">UserName</label>
        </div>
        <br/>
        <div class="mdl-textfield mdl-js-textfield">
          @inputPassword(
            signInForm("password"),
            'class -> "mdl-textfield__input"
          )
          <label class="mdl-textfield__label">Password</label>
        </div>
        <br/><br/>
        <button class="mdl-button mdl-js-button mdl-button--primary">
          <i class="material-icons icon-small">power_settings_new</i>&nbsp;@messages("sign.in")
        </button>
      }
  </fieldset>
</div>
}

Add icon to sign in button
Add icon to sign in button
