add swahili nodes,remove extra spaces

services/registration/add_guardian

@@ -1 +1,2 @@
-Enter phone number of the guardian to add: 
+Enter phone number of the guardian to add:
+ 

services/registration/pin_guard_swa

@@ -0,0 +1 @@
+Ulinzi wa PIN

services/registration/remove_guardian

@@ -1 +1 @@
-Enter phone number of  the guardian you want to remove
+Enter phone number of  the guardian you want to remove

services/registration/view_guardians_menu_swa

@@ -1 +1 @@
-Angalia walinzi
+Angalia walinzi