Avoid using uppercase text-transform (#12684)

One user suggested that the loading indicator should not be written
ALL CAPS, at first it was thought this change is very minor, but then
a few other people asked agreed on the same thing - variant without
caps looks better. It may be related that it is harder to read or just
looks too "catchy". Moreover, I asked @rf@mastodonsocial.ru community
what they think of that and 82% of 22 people agreed on this change.

This commit removes all usage of text-transform: uppercase, where the
font size specified, it changes the value by one pixel larger, so we
still keeping the "designed" size of the labels but without using CAPS.

app/javascript/styles/mastodon/_mixins.scss

@@ -34,9 +34,8 @@
   box-shadow: 2px 4px 15px rgba($base-shadow-color, 0.4);
 
   h4 {
-    text-transform: uppercase;
     color: $light-text-color;
-    font-size: 13px;
+    font-size: 14px;
     font-weight: 500;
     margin-bottom: 10px;
   }

app/javascript/styles/mastodon/about.scss

@@ -719,9 +719,8 @@ $small-breakpoint: 960px;
 
     h4 {
       padding: 10px;
-      text-transform: uppercase;
       font-weight: 700;
-      font-size: 13px;
+      font-size: 14px;
       color: $darker-text-color;
     }
 

app/javascript/styles/mastodon/accounts.scss

@@ -129,7 +129,6 @@
 
   .older,
   .newer {
-    text-transform: uppercase;
     color: $secondary-text-color;
   }
 

app/javascript/styles/mastodon/admin.scss

@@ -232,8 +232,7 @@ $content-width: 840px;
     }
 
     h4 {
-      text-transform: uppercase;
-      font-size: 13px;
+      font-size: 14px;
       font-weight: 700;
       color: $darker-text-color;
       padding-bottom: 8px;
@@ -408,8 +407,7 @@ body,
 
     strong {
       font-weight: 500;
-      text-transform: uppercase;
-      font-size: 12px;
+      font-size: 13px;
 
       @each $lang in $cjk-langs {
         &:lang(#{$lang}) {
@@ -422,8 +420,7 @@ body,
       display: inline-block;
       color: $darker-text-color;
       text-decoration: none;
-      text-transform: uppercase;
-      font-size: 12px;
+      font-size: 13px;
       font-weight: 500;
       border-bottom: 2px solid $ui-base-color;
 
@@ -757,7 +754,6 @@ a.name-tag,
       flex: 0 0 auto;
       font-weight: 500;
       color: $darker-text-color;
-      text-transform: uppercase;
       text-align: right;
 
       a {

app/javascript/styles/mastodon/components.scss

@@ -33,7 +33,7 @@
   cursor: pointer;
   display: inline-block;
   font-family: inherit;
-  font-size: 14px;
+  font-size: 15px;
   font-weight: 500;
   height: 36px;
   letter-spacing: 0;
@@ -42,7 +42,6 @@
   padding: 0 16px;
   position: relative;
   text-align: center;
-  text-transform: uppercase;
   text-decoration: none;
   text-overflow: ellipsis;
   transition: all 100ms ease-in;
@@ -887,9 +886,8 @@
   border: 0;
   color: $inverted-text-color;
   font-weight: 700;
-  font-size: 11px;
+  font-size: 12px;
   padding: 0 6px;
-  text-transform: uppercase;
   line-height: 20px;
   cursor: pointer;
   vertical-align: middle;
@@ -1411,8 +1409,7 @@ a .account__avatar {
 
   & > span {
     display: block;
-    text-transform: uppercase;
-    font-size: 11px;
+    font-size: 12px;
     color: $darker-text-color;
   }
 
@@ -2760,9 +2757,8 @@ a.account__display-name {
   background: $ui-base-color;
   color: $dark-text-color;
   padding: 8px 20px;
-  font-size: 12px;
+  font-size: 13px;
   font-weight: 500;
-  text-transform: uppercase;
   cursor: default;
 }
 
@@ -2827,8 +2823,7 @@ a.account__display-name {
     margin-top: 10px;
 
     h4 {
-      font-size: 12px;
-      text-transform: uppercase;
+      font-size: 13px;
       color: $darker-text-color;
       padding: 10px;
       font-weight: 500;
@@ -3350,9 +3345,8 @@ a.status-card.compact:hover {
 
 .loading-indicator {
   color: $dark-text-color;
-  font-size: 12px;
+  font-size: 13px;
   font-weight: 400;
-  text-transform: uppercase;
   overflow: visible;
   position: absolute;
   top: 50%;
@@ -3716,8 +3710,7 @@ a.status-card.compact:hover {
   display: block;
   vertical-align: top;
   background-color: $base-overlay-background;
-  text-transform: uppercase;
-  font-size: 11px;
+  font-size: 12px;
   font-weight: 500;
   padding: 4px;
   border-radius: 4px;
@@ -3969,8 +3962,7 @@ a.status-card.compact:hover {
   }
 
   span {
-    font-size: 12px;
-    text-transform: uppercase;
+    font-size: 13px;
     font-weight: 500;
     display: block;
   }
@@ -4569,8 +4561,7 @@ a.status-card.compact:hover {
     font-weight: 500;
     color: $inverted-text-color;
     margin-bottom: 5px;
-    text-transform: uppercase;
-    font-size: 12px;
+    font-size: 13px;
   }
 
   &__case {

app/javascript/styles/mastodon/footer.scss

@@ -94,7 +94,6 @@
     }
 
     h4 {
-      text-transform: uppercase;
       font-weight: 700;
       margin-bottom: 8px;
       color: $darker-text-color;

app/javascript/styles/mastodon/forms.scss

@@ -414,7 +414,6 @@ code {
     line-height: inherit;
     height: auto;
     padding: 10px;
-    text-transform: uppercase;
     text-decoration: none;
     text-align: center;
     box-sizing: border-box;
@@ -657,7 +656,6 @@ code {
 
   a {
     color: $highlight-text-color;
-    text-transform: uppercase;
     text-decoration: none;
     font-weight: 700;
 

app/javascript/styles/mastodon/widgets.scss

@@ -76,9 +76,8 @@
 
   h4 {
     padding: 10px;
-    text-transform: uppercase;
     font-weight: 700;
-    font-size: 13px;
+    font-size: 14px;
     color: $darker-text-color;
   }
 
@@ -139,9 +138,8 @@
 
   h4 {
     padding: 10px;
-    text-transform: uppercase;
     font-weight: 700;
-    font-size: 13px;
+    font-size: 14px;
     color: $darker-text-color;
   }
 
@@ -408,7 +406,6 @@
 
   thead th {
     text-align: center;
-    text-transform: uppercase;
     color: $darker-text-color;
     font-weight: 700;
     padding: 10px;