Pull clean codemirror.css from master

common/static/js/vendor/CodeMirror/codemirror.css

-.CodeMirror {
-  border: 2px solid black;
-  line-height: 1em;
-  font-family: monospace;
-}
-
-.CodeMirror-scroll {
-  overflow: auto;
-  height: 480px;
-  /* This is needed to prevent an IE[67] bug where the scrolled content
-     is visible outside of the scrolling box. */
-  position: relative;
-  outline: none;
-}
-
-.CodeMirror-gutter {
-  position: absolute; left: 0; top: 0;
-  z-index: 10;
-  background-color: #f7f7f7;
-  border-right: 1px solid #eee;
-  min-width: 2em;
-  height: 100%;
-}
-.CodeMirror-gutter-text {
-  color: #aaa;
-  text-align: right;
-  padding: .4em .2em .4em .4em;
-  white-space: pre !important;
-}
-.CodeMirror-lines {
-  padding: .4em;
-  white-space: pre;
-}
-
-.CodeMirror pre {
-  -moz-border-radius: 0;
-  -webkit-border-radius: 0;
-  -o-border-radius: 0;
-  border-radius: 0;
-  border-width: 0; margin: 0; padding: 0; background: transparent;
-  font-family: inherit;
-  font-size: 16px;
-  padding: 0; margin: 0;
-  white-space: pre;
-  line-height: 22px;
-  word-wrap: normal;
-}
-
-/* THK: This is to prevent global 'span' from defining .CodeMirror style */
-.CodeMirror pre span {
-    font: inherit;
-}
-
-.CodeMirror-wrap pre {
-  word-wrap: break-word;
-  white-space: pre-wrap;
-}
-.CodeMirror-wrap .CodeMirror-scroll {
-  overflow-x: hidden;
-}
-
-.CodeMirror textarea {
-  outline: none !important;
-}
-
-.CodeMirror pre.CodeMirror-cursor {
-  z-index: 10;
-  position: absolute;
-  visibility: hidden;
-  border-left: 1px solid black;
-  border-right:none;
-  width:0;
-}
-.CodeMirror pre.CodeMirror-cursor.CodeMirror-overwrite {}
-.CodeMirror-focused pre.CodeMirror-cursor {
-  visibility: visible;
-}
-
-div.CodeMirror-selected { background: #d9d9d9; }
-.CodeMirror-focused div.CodeMirror-selected { background: #d7d4f0; }
-
-.CodeMirror-searching {
-  background: #ffa;
-  background: rgba(255, 255, 0, .4);
-}
-
-/* Default theme */
-
-.cm-s-default span.cm-keyword {color: #708;}
-.cm-s-default span.cm-atom {color: #219;}
-.cm-s-default span.cm-number {color: #164;}
-.cm-s-default span.cm-def {color: #00f;}
-.cm-s-default span.cm-variable {color: black;}
-.cm-s-default span.cm-variable-2 {color: #05a;}
-.cm-s-default span.cm-variable-3 {color: #085;}
-.cm-s-default span.cm-property {color: black;}
-.cm-s-default span.cm-operator {color: black;}
-.cm-s-default span.cm-comment {color: #a50;}
-.cm-s-default span.cm-string {color: #a11;}
-.cm-s-default span.cm-string-2 {color: #f50;}
-.cm-s-default span.cm-meta {color: #555;}
-.cm-s-default span.cm-error {color: #f00;}
-.cm-s-default span.cm-qualifier {color: #555;}
-.cm-s-default span.cm-builtin {color: #30a;}
-.cm-s-default span.cm-bracket {color: #cc7;}
-.cm-s-default span.cm-tag {color: #170;}
-.cm-s-default span.cm-attribute {color: #00c;}
-.cm-s-default span.cm-header {color: #a0a;}
-.cm-s-default span.cm-quote {color: #090;}
-.cm-s-default span.cm-hr {color: #999;}
-.cm-s-default span.cm-link {color: #00c;}
-
-span.cm-header, span.cm-strong {font-weight: bold;}
-span.cm-em {font-style: italic;}
-span.cm-emstrong {font-style: italic; font-weight: bold;}
-span.cm-link {text-decoration: underline;}
-
-div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
-div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}