various syntactic updates that sass requires

wagtail/wagtailadmin/static/wagtailadmin/scss/components/formatters.scss

@@ -129,14 +129,11 @@
         border:1px solid $color-grey-2;
         background:white
     }
-
-    /* FIXME: needs converting to valid SASS
-    a&:hover,
-    a&.primary:hover{
-        border-color:$color-teal;
-        color:$color-teal;
-    }
-    */
+}
+a.status-tag:hover,
+a.status-tag.primary:hover{
+    border-color:$color-teal;
+    color:$color-teal;
 }
 
 /* free tagging tags from taggit */
@@ -157,17 +154,17 @@
         content:"u";
         padding-right:0.5em;
     }
-    /* FIXME: needs converting to valid SASS
-    a&:hover{
-        background-color:$color-teal-darker;
-        color:white;
-    }
-    */
 
     .taglist &{
         margin-right:0.8em;
     }
 }
+a.tag:hover{
+    background-color:$color-teal-darker;
+    color:white;
+}
+
+
 .taglist {
     font-size:0.9em;
     line-height:2.4em;

wagtail/wagtailadmin/static/wagtailadmin/scss/components/forms.scss

@@ -649,7 +649,7 @@ fieldset, input, textarea, select{
     @include transition(background-color 0.2s ease);
 }
 input[type=submit], input[type=reset], input[type=button], .button, button{
-    @include transition("background-color 0.2s ease, color 0.2s ease");
+    @include transition(background-color 0.2s ease, color 0.2s ease);
 }
 .help{
     @include transition(opacity 0.2s ease);

wagtail/wagtailadmin/static/wagtailadmin/scss/components/messages.scss

@@ -11,7 +11,7 @@
         opacity:0;
     }
     li{
-        @include .nice-padding;
+        @include nice-padding;
         padding-top:1.3em;
         padding-bottom:1.3em;
         color:white;
@@ -34,7 +34,7 @@
 
 .ready .messages ul,
 .messages.appear ul{
-    @include transition-immediate("top 0.5s ease, opacity 0.5s ease, max-height 1.2s ease");
+    @include transition-immediate(top 0.5s ease, opacity 0.5s ease, max-height 1.2s ease);
     opacity:1;
     top:0;
 }

wagtail/wagtailadmin/static/wagtailadmin/scss/core.scss

@@ -888,5 +888,5 @@ footer,
     @include transition-transform(0.2s ease);
 }
 .nav-main a, a{
-    @include transition("color 0.2s ease, background-color 0.2s ease");
+    @include transition(color 0.2s ease, background-color 0.2s ease);
 }

wagtail/wagtailadmin/static/wagtailadmin/scss/mixins.scss

@@ -21,7 +21,7 @@
     }
 }
 
-@mixin transition($transition){
+@mixin transition($transition...){
     body.ready &{
         -webkit-transition: $transition;
         -moz-transition: $transition;
@@ -29,14 +29,14 @@
         transition: $transition;
     }
 }
-@mixin transition-immediate($transition){
+@mixin transition-immediate($transition...){
     -webkit-transition: $transition;
     -moz-transition: $transition;
     -o-transition: $transition;
     transition: $transition;
 }
 
-@mixin transition-transform($transition) {
+@mixin transition-transform($transition...) {
   -webkit-transition: -webkit-transform $transition;
      -moz-transition: -moz-transform $transition;
        -o-transition: -o-transform $transition;