Don't wrap the path text in the status bar

Also set a min width so the branch icon doesn't overlap
the path text when the window isn't wide enough to display
both.

src/packages/status-bar/stylesheets/status-bar.less

@@ -6,9 +6,12 @@
   -webkit-user-select: none;
   cursor: default;
   overflow: hidden;
+  white-space: nowrap;
+  min-width: -webkit-min-content;
 }
 
 .status-bar .git-branch {
+  margin-left: 10px;
   float: right;
 }