Update edit.php

Change “Locator” for “Gridsquare” to standardise on one term throughout the UI.

application/views/user/edit.php

@@ -138,7 +138,7 @@
 						</div>
 
 						<div class="form-group">
-							<label>Locator</label>
+							<label>Gridsquare</label>
 							<input class="form-control" type="text" name="user_locator" value="<?php if(isset($user_locator)) { echo $user_locator; } ?>" />
 								<?php if(isset($locator_error)) { echo "<div class=\"small error\">".$locator_error."</div>"; } else { ?>
 								<?php } ?>