build: reanimate the dead

Fix build with ndn-cxx 0.7.1 and ChronoSync 0.5.3

* Adapt to new API
* Upgrade to Qt5
* Several other bugs

Refs: #4563, #4087
Change-Id: Ic55d687caade08f557f9b9ec3e9569bc96798710
diff --git a/src/chatroom-info.hpp b/src/chatroom-info.hpp
index dca4090..81e0fde 100644
--- a/src/chatroom-info.hpp
+++ b/src/chatroom-info.hpp
@@ -95,7 +95,7 @@
   setManager(const Name& manager);
 
 private:
-  template<bool T>
+  template<ndn::encoding::Tag T>
   size_t
   wireEncode(ndn::EncodingImpl<T>& encoder) const;