Networkmanager (#134)

* rename ImageLoader* to Network*

* static NetworkManager

* NetworkManager queue arbitrary requests

* modify urlfetch to use NetworkManager

* urlfetchjson in terms of NetworkManager

* fetchurljson fetchurltimeout fetchurljsontimeout

special fetch url functions with various connects and functions to be
called

* operate on fetched data in the correct thread

* operate on fetched resources in correct thread

* networkmanager urlfetch functions

* expose urlfetch functions of networkmanager through util and
util::twitch

* add caller to util functions

* cleanup

* formatting

* urlPut function for NetworkManager and util::twitch

* cleanup worker (no more leak)

* use urlfetch for LazyLoadedImage::loadImage

* Rename NetworkManager methods (#1)

* Rename NetworkManager methods

Remove unused NetworkManager methods
Remove unused NetworkManager includes

Reorder includes in lazyloadedimage.cpp and urlfetch.hpp

* try to simplify code, might break everything

* fixed some more stuff?

src/util/networkmanager.cpp

@@ -0,0 +1,24 @@
+#include "util/networkmanager.hpp"
+
+#include <QNetworkAccessManager>
+
+namespace chatterino {
+namespace util {
+
+QThread NetworkManager::workerThread;
+QNetworkAccessManager NetworkManager::NaM;
+
+void NetworkManager::init()
+{
+    NetworkManager::NaM.moveToThread(&NetworkManager::workerThread);
+    NetworkManager::workerThread.start();
+}
+
+void NetworkManager::deinit()
+{
+    NetworkManager::workerThread.quit();
+    NetworkManager::workerThread.wait();
+}
+
+}  // namespace util
+}  // namespace chatterino