feat: Implement email sending utilities and templates for job notifications

- Added email_service.py for sending emails with SMTP configuration.
- Introduced email_templates.py to render job alert email subjects and bodies.
- Enhanced scraper.py to extract contact information from job listings.
- Updated settings.js to handle negative keyword input validation.
- Created email.html and email_templates.html for managing email subscriptions and templates in the admin interface.
- Modified base.html to include links for email alerts and templates.
- Expanded user settings.html to allow management of negative keywords.
- Updated utils.py to include functions for retrieving negative keywords and email settings.
- Enhanced job filtering logic to exclude jobs containing negative keywords.

web/templates/user/settings.html

@@ -77,6 +77,29 @@ block content %}
     <p>No keywords available. Ask an admin to add some.</p>
     {% endif %}
   </fieldset>
+  <fieldset>
+    <legend>Negative Keywords</legend>
+    <p>
+      <small>Add new Negative Keyword:</small>
+      <input
+        type="text"
+        name="new-negative-keyword"
+        id="new-negative-keyword"
+        value=""
+        placeholder="Type a keyword and save to add"
+        size="30"
+      />
+    </p>
+    {% if user_negative_keywords %} {% for nk in user_negative_keywords %}
+    <label style="display: block">
+      <input type="checkbox" name="negative_keyword" value="{{ nk }}" checked />
+      {{ nk }}
+    </label>
+    {% endfor %} {% else %}
+    <p>No negative keywords set.</p>
+    {% endif %}
+    <p><small>Uncheck to remove.</small></p>
+  </fieldset>
   <button type="submit">Save</button>
 </form>
 {% endblock %} {% block footer_scripts %}