Fix trailing spaces in translations

Move them from translation strings to static HTML part.

Author: JocelynDelalande

notebook/i18n/fr_FR/LC_MESSAGES/nbui.po

@@ -674,31 +674,31 @@ msgid "Select All Folders"
 msgstr "Sélectionner Tous les Répertoires"
 
 #: notebook/templates/tree.html:98
-msgid " Folders"
+msgid  "Folders"
 msgstr "Répertoires"
 
 #: notebook/templates/tree.html:99
 msgid "Select All Notebooks"
 msgstr "Sélectionner tous les Notebooks"
 
 #: notebook/templates/tree.html:99
-msgid " All Notebooks"
-msgstr "Tous les notebooks"
+msgid "All Notebooks"
+msgstr "Tous les Notebooks"
 
 #: notebook/templates/tree.html:100
 msgid "Select Running Notebooks"
 msgstr "Sélectionner les Notebooks en cours d'exécution"
 
 #: notebook/templates/tree.html:100
-msgid " Running"
-msgstr "Actif"
+msgid "Running"
+msgstr "Actifs"
 
 #: notebook/templates/tree.html:101
 msgid "Select All Files"
 msgstr "Sélectionner "
 
 #: notebook/templates/tree.html:101
-msgid " Files"
+msgid "Files"
 msgstr "Fichiers"
 
 #: notebook/templates/tree.html:114

notebook/i18n/nbui.pot

@@ -663,31 +663,31 @@ msgid "Select All Folders"
 msgstr ""
 
 #: notebook/templates/tree.html:98
-msgid " Folders"
+msgid "Folders"
 msgstr ""
 
 #: notebook/templates/tree.html:99
 msgid "Select All Notebooks"
 msgstr ""
 
 #: notebook/templates/tree.html:99
-msgid " All Notebooks"
+msgid "All Notebooks"
 msgstr ""
 
 #: notebook/templates/tree.html:100
 msgid "Select Running Notebooks"
 msgstr ""
 
 #: notebook/templates/tree.html:100
-msgid " Running"
+msgid "Running"
 msgstr ""
 
 #: notebook/templates/tree.html:101
 msgid "Select All Files"
 msgstr ""
 
 #: notebook/templates/tree.html:101
-msgid " Files"
+msgid "Files"
 msgstr ""
 
 #: notebook/templates/tree.html:114

notebook/i18n/zh_CN/LC_MESSAGES/nbui.po

@@ -663,31 +663,31 @@ msgid "Select All Folders"
 msgstr "选择所有文件夹"
 
 #: notebook/templates/tree.html:98
-msgid " Folders"
+msgid "Folders"
 msgstr "文件夹"
 
 #: notebook/templates/tree.html:99
 msgid "Select All Notebooks"
 msgstr "选择所有笔记"
 
 #: notebook/templates/tree.html:99
-msgid " All Notebooks"
+msgid "All Notebooks"
 msgstr "所有笔记"
 
 #: notebook/templates/tree.html:100
 msgid "Select Running Notebooks"
 msgstr "选择运行中的笔记"
 
 #: notebook/templates/tree.html:100
-msgid " Running"
+msgid "Running"
 msgstr "运行"
 
 #: notebook/templates/tree.html:101
 msgid "Select All Files"
 msgstr "选择所有文件"
 
 #: notebook/templates/tree.html:101
-msgid " Files"
+msgid "Files"
 msgstr "文件"
 
 #: notebook/templates/tree.html:114

notebook/templates/tree.html

@@ -103,10 +103,10 @@
                   <span class="sr-only">Toggle Dropdown</span>
                 </button>
                 <ul id='selector-menu' class="dropdown-menu" role="menu" aria-labelledby="tree-selector-btn">
-                  <li role="presentation"><a id="select-folders" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select All Folders{% endtrans %}"><i class="menu_icon folder_icon icon-fixed-width"></i>{% trans %} Folders{% endtrans %}</a></li>
-                  <li role="presentation"><a id="select-notebooks" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select All Notebooks{% endtrans %}"><i class="menu_icon notebook_icon icon-fixed-width"></i>{% trans %} All Notebooks{% endtrans %}</a></li>
-                  <li role="presentation"><a id="select-running-notebooks" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select Running Notebooks{% endtrans %}"><i class="menu_icon running_notebook_icon icon-fixed-width"></i>{% trans %} Running{% endtrans %}</a></li>
-                  <li role="presentation"><a id="select-files" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select All Files{% endtrans %}"><i class="menu_icon file_icon icon-fixed-width"></i>{% trans %} Files{% endtrans %}</a></li>
+                  <li role="presentation"><a id="select-folders" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select All Folders{% endtrans %}"><i class="menu_icon folder_icon icon-fixed-width"></i>&nbsp;{% trans %}Folders{% endtrans %}</a></li>
+                  <li role="presentation"><a id="select-notebooks" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select All Notebooks{% endtrans %}"><i class="menu_icon notebook_icon icon-fixed-width"></i>&nbsp;{% trans %}All Notebooks{% endtrans %}</a></li>
+                  <li role="presentation"><a id="select-running-notebooks" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select Running Notebooks{% endtrans %}"><i class="menu_icon running_notebook_icon icon-fixed-width"></i>&nbsp;{% trans %}Running{% endtrans %}</a></li>
+                  <li role="presentation"><a id="select-files" role="menuitem" tabindex="-1" href="#" title="{% trans %}Select All Files{% endtrans %}"><i class="menu_icon file_icon icon-fixed-width"></i>&nbsp;{% trans %}Files{% endtrans %}</a></li>
                 </ul>
               </div>
               <div id="project_name">