Move Gantt charts to external plugin

assets/sass/_gantt_chart.sass

@@ -1,87 +0,0 @@
-@import variables
-
-div
-  &.ganttview-hzheader-month, &.ganttview-hzheader-day, &.ganttview-vtheader, &.ganttview-vtheader-item-name, &.ganttview-vtheader-series, &.ganttview-grid, &.ganttview-grid-row-cell
-    float: left
-  &.ganttview-hzheader-month, &.ganttview-hzheader-day
-    text-align: center
-  &.ganttview-grid-row-cell.last, &.ganttview-hzheader-day.last, &.ganttview-hzheader-month.last
-    border-right: none
-  &.ganttview
-    border: 1px solid #999
-  &.ganttview-hzheader-month
-    width: 60px
-    height: 20px
-    border-right: 1px solid #d0d0d0
-    line-height: 20px
-    overflow: hidden
-  &.ganttview-hzheader-day
-    width: 20px
-    height: 20px
-    border-right: 1px solid #f0f0f0
-    border-top: 1px solid #d0d0d0
-    line-height: 20px
-    color: color('medium')
-  &.ganttview-vtheader
-    margin-top: 41px
-    width: 400px
-    overflow: hidden
-    background-color: #fff
-  &.ganttview-vtheader-item
-    color: color('medium')
-  &.ganttview-vtheader-series-name
-    width: 400px
-    height: 31px
-    line-height: 31px
-    padding-left: 3px
-    border-top: 1px solid #d0d0d0
-    text-overflow: ellipsis
-    overflow: hidden
-    white-space: nowrap
-    a
-      color: color('medium')
-      text-decoration: none
-      &:hover
-        color: color('primary')
-        text-decoration: underline
-      i
-        color: color('dark')
-      &:hover i
-        color: color('medium')
-  &.ganttview-slide-container
-    overflow: auto
-    border-left: 1px solid #999
-  &.ganttview-grid-row-cell
-    width: 20px
-    height: 31px
-    border-right: 1px solid #f0f0f0
-    border-top: 1px solid #f0f0f0
-    &.ganttview-weekend
-      background-color: #fafafa
-  &.ganttview-blocks
-    margin-top: 40px
-  &.ganttview-block-container
-    height: 28px
-    padding-top: 4px
-  &.ganttview-block
-    position: relative
-    height: 25px
-    background-color: #E5ECF9
-    border: 1px solid #c0c0c0
-    border-radius: 3px
-
-.ganttview-block-movable
-  cursor: move
-
-div
-  &.ganttview-block-not-defined
-    border-color: #000
-    background-color: #000
-  &.ganttview-block-text
-    position: absolute
-    height: 12px
-    font-size: size('tiny')
-    color: color('light')
-    padding: 2px 3px
-  &.ganttview-block div.ui-resizable-handle.ui-resizable-s
-    bottom: -0

assets/sass/app.sass

@@ -50,6 +50,5 @@
 @import documentation
 @import panel
 @import activity_stream
-@import gantt_chart
 @import user_mentions
 @import image_slideshow