Minor CSS Tweaks (barryvdh#676)

* Adds z-index declaration to phpdebugbar div so that it isn't overlapped by pre.sf-dump elements * Sets .phpdebugbar-widgets-sql elements to 'cursor: text;' to make it easier to copy the queries into an SQL editor

Author: sco-tt

src/Resources/laravel-debugbar.css

@@ -3,6 +3,7 @@ div.phpdebugbar {
  font-family: "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Geneva, Verdana, sans-serif;
  direction: ltr;
  text-align: left;
+ z-index: 100000;
 }
 
 div.phpdebugbar-resize-handle {
@@ -219,6 +220,7 @@ ul.phpdebugbar-widgets-list li.phpdebugbar-widgets-list-item {
 ul.phpdebugbar-widgets-list li.phpdebugbar-widgets-list-item .phpdebugbar-widgets-sql {
  flex: 1;
  margin-right: 5px;
+ cursor: text;
 }
 
 ul.phpdebugbar-widgets-list li.phpdebugbar-widgets-list-item .phpdebugbar-widgets-duration {