Improve the people invite screens

#904

- Hide/show the non-matrix-enabled contacts from the local contacts section.

Vector/ViewController/ContactsTableViewController.h

@@ -40,7 +40,7 @@
  'ContactsTableViewController' instance is used to display/filter a list of contacts.
  See 'ContactsTableViewController-inherited' object for example of use.
  */
-@interface ContactsTableViewController : MXKViewController <UITableViewDelegate, UITableViewDataSource>
+@interface ContactsTableViewController : MXKViewController <UITableViewDelegate, UITableViewDataSource, UIGestureRecognizerDelegate>
 {
 @protected
     // Section indexes
@@ -51,6 +51,9 @@
     // The contact used to describe the current user.
     MXKContact *userContact;
     
+    // Tell whether the non-matrix-enabled contacts must be hidden or not. NO by default.
+    BOOL hideNonMatrixEnabledContacts;
+    
     // Search results
     NSString *currentSearchText;
     NSMutableArray<MXKContact*> *filteredLocalContacts;