Revert "FIX: Show signup input tips and improve spacing"

This reverts commit d449834a28.

The signup input tips were hidden instead.

app/assets/javascripts/discourse/templates/components/input-tip.hbs

@@ -1 +1 @@
-{{tipIcon}}{{tipReason}}
+{{tipIcon}} {{tipReason}}

app/assets/stylesheets/common/base/login.scss

@@ -12,17 +12,6 @@
   display: none;
 }
 
-.login-form .tip {
-  .d-icon {
-    margin-right: 0.25em;
-  }
-  &:not(:empty) {
-    + td {
-      display: none;
-    }
-  }
-}
-
 #login-form {
   table {
     width: 100%;
@@ -83,6 +72,9 @@
       margin-bottom: 0;
       padding-top: 5px;
     }
+    &:first-of-type > label {
+      margin-top: 0;
+    }
 
     input[type="text"] {
       margin-bottom: 0;
@@ -101,7 +93,7 @@
         font-weight: normal;
       }
       .instructions {
-        margin-top: 0.4em;
+        margin-top: 0.15em;
         color: $primary-medium;
         line-height: $line-height-medium;
       }

app/assets/stylesheets/desktop/login.scss

@@ -222,10 +222,6 @@
       margin-top: 5px;
     }
 
-    &:first-of-type > label {
-      margin-top: 0;
-    }
-
     > label {
       width: auto;
     }
@@ -269,14 +265,12 @@
 
 .login-form {
   .tip {
-    &:empty {
+    &:not(:empty) + td {
       display: none;
     }
-
     &:not(:empty),
     &:empty + td {
       min-height: 1.75em;
-      margin-top: 0.25em;
       &.bad .svg-icon {
         vertical-align: middle;
       }