Add responsiveness for footer. Update gulpjs, package.json and bootstrap sass

static/assets/bootstrap/sass/_pagination.sass

@@ -0,0 +1,67 @@
+.pagination
+  display: flex
+
+  +list-unstyled
+  +border-radius
+
+.page-link
+  position: relative
+  display: block
+  padding: $pagination-padding-y $pagination-padding-x
+  margin-left: -$pagination-border-width
+  line-height: $pagination-line-height
+  color: $pagination-color
+  background-color: $pagination-bg
+  border: $pagination-border-width solid $pagination-border-color
+
+  &:hover
+    z-index: 2
+    color: $pagination-hover-color
+    text-decoration: none
+    background-color: $pagination-hover-bg
+    border-color: $pagination-hover-border-color
+
+  &:focus
+    z-index: 2
+    outline: $pagination-focus-outline
+    box-shadow: $pagination-focus-box-shadow
+
+  // Opinionated: add "hand" cursor to non-disabled .page-link elements
+  &:not(:disabled):not(.disabled)
+    cursor: pointer
+
+.page-item
+  &:first-child
+    .page-link
+      margin-left: 0
+
+      +border-left-radius($border-radius)
+
+  &:last-child
+    .page-link
+      +border-right-radius($border-radius)
+
+  &.active .page-link
+    z-index: 1
+    color: $pagination-active-color
+    background-color: $pagination-active-bg
+    border-color: $pagination-active-border-color
+
+  &.disabled .page-link
+    color: $pagination-disabled-color
+    pointer-events: none
+
+    // Opinionated: remove the "hand" cursor set previously for .page-link
+    cursor: auto
+    background-color: $pagination-disabled-bg
+    border-color: $pagination-disabled-border-color
+
+//
+// Sizing
+//
+
+.pagination-lg
+  +pagination-size($pagination-padding-y-lg, $pagination-padding-x-lg, $font-size-lg, $line-height-lg, $border-radius-lg)
+
+.pagination-sm
+  +pagination-size($pagination-padding-y-sm, $pagination-padding-x-sm, $font-size-sm, $line-height-sm, $border-radius-sm)