fix(GUI): normalize button text casing (#1046)

Some button texts are all uppercase, while the remaining of them are
capitalised. This commit capitalises all button texts for consistency
purposes.

Fixes: https://github.com/resin-io/etcher/issues/881
Change-Type: patch
Changelog-Entry: Normalize button text casing.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>

lib/gui/components/drive-selector/templates/drive-selector-modal.tpl.html

@@ -52,5 +52,5 @@
 <div class="modal-footer">
   <button class="button button-primary button-block"
     ng-click="modal.closeModal()"
-    ng-disabled="!modal.state.hasDrive()">CONTINUE</button>
+    ng-disabled="!modal.state.hasDrive()">Continue</button>
 </div>

lib/gui/components/update-notifier/templates/update-notifier-modal.tpl.html

@@ -12,9 +12,9 @@
 <div class="modal-footer">
   <div class="modal-menu">
     <button class="button button-primary"
-      os-open-external="https://etcher.io?ref=etcher_update">DOWNLOAD</button>
+      os-open-external="https://etcher.io?ref=etcher_update">Download</button>
     <button class="button button-default"
-      ng-click="modal.closeModal()">SKIP</button>
+      ng-click="modal.closeModal()">Skip</button>
   </div>
 
   <div class="checkbox text-right">

lib/gui/components/warning-modal/styles/_warning-modal.scss

@@ -21,6 +21,3 @@
 .modal-warning-modal .modal-title .glyphicon {
   color: $palette-theme-danger-background;
 }
-.modal-warning-modal .button {
-  text-transform: uppercase;
-}

lib/gui/css/main.css

@@ -6485,9 +6485,6 @@ body {
 .modal-warning-modal .modal-title .glyphicon, .modal-warning-modal .modal-title .tick {
   color: #d9534f; }
 
-.modal-warning-modal .button, .modal-warning-modal .progress-button {
-  text-transform: uppercase; }
-
 /*
  * Copyright 2016 resin.io
  *