Feature/consistency language translations

In this feature branch:

• I checked language consistency in modules.
• Translations tags for strings.
• Spelling check.
• Fixed some single quotes.

modules/o365_contacts/src/Plugin/Block/SearchContactBlock.php

@@ -5,11 +5,11 @@ namespace Drupal\o365_contacts\Plugin\Block;
 use Drupal\o365\Block\O365BlockBase;
 
 /**
- * Provides a 'Contact Search' block.
+ * Provides a 'Office 365 contact search' block.
  *
  * @Block(
  *   id = "o365_contacts",
- *   admin_label = @Translation("Contact Search"),
+ *   admin_label = @Translation("Contact search"),
  *   category = @Translation("Office 365")
  * )
  */