make invite forms submit button more noticeable

src/js/components/inviteForm.js

@@ -97,7 +97,7 @@ module.exports = React.createClass({
           type='submit'
           title='Lähetä'
           disabled={this.state.error || this.state.submitted}>
-          ⏎
+          Lähetä
         </button>
         <div className='invite-form__loader'>
           <Loader />

src/styles/style.styl

@@ -126,13 +126,12 @@ section:first-child
 .invite-form
   position relative
   .btn
-    width 40px
     height 32px
-    padding 0
+    padding 0 10px
     position absolute
     right 8px
     top 7px
-    color rgba(255, 255, 255, 0.5)
+    color #fff
     &:active
       border-bottom 0
   .invite-form__loader