Add Link button to non-link tasks to link them elsewhere.

svelte-ui/src/components/TaskEntry.svelte

@@ -24,6 +24,7 @@
   let mdTaskEdit: ModalData;
   let mdTaskDelete: ModalData;
   let mdTaskUnlink: ModalData;
+  let mdTaskLink: ModalData;
   let isMoving = false;
   let isLinked = false;
 
@@ -68,6 +69,7 @@
   $: mdLogAdd = {name: "log.add", task: {...task, project}};
   $: mdTaskEdit = {name: "task.edit", task: {...task, project}};
   $: mdTaskDelete = {name: "task.delete", task: {...task, project}};
+  $: mdTaskLink = {name: "tasklink.add", task};
   $: mdTaskUnlink = {name: "tasklink.delete", task, project};
   $: isLinked = task.projectId !== project.id;
 </script>
@@ -88,6 +90,7 @@
         {#if isLinked}
           <Option open={mdTaskUnlink}>Unlink</Option>
         {:else}
+          <Option open={mdTaskLink}>Link</Option>
           <Option open={mdTaskDelete}>Delete</Option>
           ·
           {#if !isMoving && (!task.active) }