Merge "MediaWiki UI: Use em's for the button width"

diff --combined resources/src/mediawiki.ui/components/buttons.less
index 89a564a,d303798..2512d49
--- 1/resources/src/mediawiki.ui/components/buttons.less
--- 2/resources/src/mediawiki.ui/components/buttons.less
+++ b/resources/src/mediawiki.ui/components/buttons.less
@@@ -47,7 -47,7 +47,7 @@@
        // Container styling
        .button-colors(#FFF);
        border-radius: @borderRadius;
-       min-width: 70px;
+       min-width: 4em;
  
        // Ensure that buttons and inputs are nicely aligned when they have differing heights
        vertical-align: middle;
@@@ -188,8 -188,7 +188,8 @@@
  
        // Quiet buttons
        //
 -      // Use quiet buttons when they are less important and alongisde other progressive/destructive/progressive buttons.
 +      // Use quiet buttons when they are less important and alongside other constructive/progressive/destructive buttons.
 +      // Use of quiet buttons is not recommended on mobile/tablet due to lack of hover state.
        //
        // Markup:
        // <div>