i18n: improve translations across horilla (#1014)

- Added trans() / _() translations to models, forms and templates.
- Updated Spanish locale (django.po).
- Fixed missing verbose_name translations.

Known issues:
- "Leave Type" label in horilla/leave/forms.py not translating.
- "Performance" and "Mails automations" still pending.

templates/floating_button.html

@@ -1,3 +1,5 @@
+{% load i18n %}
+
 {% load static %}
 {% load horillafilters %}
 <style>
@@ -110,7 +112,7 @@
 </style>
 
 <div class="inner-fabs">
-    <div id="fab9" class="fab round" data-tooltip="Dashboard Charts">
+    <div id="fab9" class="fab round" data-tooltip="{% trans 'Dashboard Charts' %}">
         <a
             class="text-light"
             data-toggle="oh-modal-toggle"
@@ -122,7 +124,7 @@
         </a>
     </div>
     {% if "helpdesk"|app_installed %}
-        <div id="fab8" class="fab round" data-tooltip="Create Ticket">
+        <div id="fab8" class="fab round" data-tooltip="{% trans 'Create Ticket' %}">
             <a
                 class="text-light"
                 data-toggle="oh-modal-toggle"
@@ -135,7 +137,7 @@
         </div>
     {% endif %}
     {% if "asset"|app_installed %}
-    <div id="fab7" class="fab round" data-tooltip="Create Asset Request">
+    <div id="fab7" class="fab round" data-tooltip="{% trans 'Create Asset Request' %}">
         <a
             class="text-light"
             data-toggle="oh-modal-toggle"
@@ -148,7 +150,7 @@
     </div>
     {% endif %}
     {% if "payroll"|app_installed %}
-    <div id="fab6" class="fab round" data-tooltip="Create Reimbursement">
+    <div id="fab6" class="fab round" data-tooltip="{% trans 'Create Reimbursement' %}">
         <a
             class="text-light"
             data-toggle="oh-modal-toggle"
@@ -160,7 +162,7 @@
         </a>
     </div>
     {% endif %}
-    <div id="fab5" class="fab round" data-tooltip="Create Work Type Request">
+    <div id="fab5" class="fab round" data-tooltip="{% trans 'Create Work Type Request' %}">
         <a
             class="text-light"
             data-toggle="oh-modal-toggle"
@@ -171,7 +173,7 @@
             <i class="material-icons mt-2">work</i>
         </a>
     </div>
-    <div id="fab4" class="fab round" data-tooltip="Create Shift Request">
+    <div id="fab4" class="fab round" data-tooltip="{% trans 'Create Shift Request' %}">
         <a
             class="text-light"
             data-toggle="oh-modal-toggle"
@@ -183,7 +185,7 @@
         </a>
     </div>
     {% if "leave"|app_installed %}
-        <div id="fab3" class="fab round" data-tooltip="Create Leave Request">
+        <div id="fab3" class="fab round" data-tooltip="{% trans 'Create Leave Request' %}">
             <a
                 class="text-light"
                 data-toggle="oh-modal-toggle"
@@ -202,7 +204,7 @@
         </div>
     {% endif %}
     {% if "attendance"|app_installed %}
-    <div id="fab2" class="fab round" data-tooltip="Create Attendance Request">
+    <div id="fab2" class="fab round" data-tooltip="{% trans 'Create Attendance Request' %}">
         <a
             class="text-light"
             data-toggle="oh-modal-toggle"
@@ -217,7 +219,7 @@
     </div>
     {% endif %}
 </div>
-<div id="fab1" class="fab round" data-tooltip="Quick Action">
+<div id="fab1" class="fab round" data-tooltip="{% trans 'Quick Actions' %}">
     <i id="fabIcon" class="material-icons">add</i>
 </div>
 

templates/index.html

@@ -150,7 +150,7 @@
 
                         {% if request.user|any_permission:'base' or perms.attendance.view_attendancevalidationcondition %}
                             <!-- Start of settings button in nav bar -->
-                            <div class="oh-navbar__action-icons" title="Settings">
+                            <div class="oh-navbar__action-icons" title="{% trans 'Settings' %}">
                                 <a href="{% url 'general-settings' %}" id="settingsMenu" class="oh-navbar__action-icons-link">
                                     <ion-icon name="settings-outline" class="oh-navbar__icon"></ion-icon>
                                 </a>

templates/notification/notification.html

@@ -12,7 +12,7 @@
         href="#"
         class="oh-navbar__notification-link"
         @click="open = !open"
-        title="Notifications"
+        title="{% trans 'Notifications' %}"
     >
         <ion-icon
             name="notifications-outline"