Remove outdated static files and begin refactoring

- global.css containing global classes

go/static/css/global.css

+.begin {
+    margin-top: 6rem;
+}
\ No newline at end of file

go/static/css/styles.css

-html {
-  position: relative;
-  min-height: 100%;
-  font-family: -apple-system, BlinkMacSystemFont, 
-      "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", 
-      "Fira Sans", "Droid Sans", "Helvetica Neue", 
-      sans-serif;
-}
-body {
-  /* Margin bottom by footer height */
-  margin-bottom: 80px;
-}
-.footer {
-  position: absolute;
-  bottom: 0;
-  width: 100%;
-  /* Set the fixed height of the footer here */
-  height: 60px;
-}
-.valign-center {
-  height: 60px;
-  line-height: 60px;
-}
-.valign-center span {
-  display: inline-block;
-  vertical-align: middle;
-}
-.asteriskField {
-    display: none;
-}
-.fa-li {
-  top: 5px;
-}
-.fa-ul > li {
-  padding: 0 0 5px;
-}
-.navbar-brand {
-  padding: 10px 15px;
-}
-.btn-blockUsr {
-  font-weight: 600;
-}
-.btn-Unblock {
-  font-weight: 600;
-}
-.inputfilter {
-    background-position: 10px 12px;
-    background-repeat: no-repeat;
-    width: 35%;
-    font-size: 16px;
-    padding: 7px 20px 7px 10px;
-    border: 1px solid #ddd;
-    float: right;
-    margin-top: 21px;
-    margin-bottom: 10.5px;
-}