overhauling constants, working on translations

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/task/ListTask.svelte

@@ -13,7 +13,7 @@
     import LineEditor        from '../../Components/LineEditor.svelte';
 
     let {
-        estimated_time,
+        est_time,
         lastEvent,
         show_closed,
         siblings,
@@ -137,8 +137,8 @@
         return {state:0};
     }
 
-    if (task.estimated_time){
-        estimated_time.sum += task.estimated_time;
+    if (task.est_time){
+        est_time.sum += task.est_time;
     }
 
     $effect(() => {
@@ -157,8 +157,8 @@
 {#if !deleted}
 <li draggable="true" {ondrop} ondragover={e => e.preventDefault()} {ondragstart} class="task {states[task.status]?.toLowerCase()}">
     <LineEditor bind:value={task.name} onclick={openTask} editable={true} onSet={setName} type="a" href={`/task/${task.id}/view`} />
-    {#if task.estimated_time}
-    <span class="estimated_time">({+task.estimated_time}&nbsp;h)</span>
+    {#if task.est_time}
+    <span class="estimated_time">({+task.est_time}&nbsp;h)</span>
     {/if}
     <button class="symbol" title={t('drag_n_drop')}></button>
     {#if states[task.status] != 'PENDING'}
@@ -180,7 +180,7 @@
     <button class="symbol" title={t('add_object',{object:t('subtask')})} onclick={addSubtask}></button>
     <button class="symbol" title={t('timetracking')} onclick={addTime}></button>
     {#if children}
-    <TaskList {states} {lastEvent} tasks={children} {estimated_time} {show_closed} />
+    <TaskList {states} {lastEvent} tasks={children} {est_time} {show_closed} />
     {/if}
 </li>
 {/if}