fixed memeprovider, added methods to pluginmanager
Implemented shutdown processor
Reimplemented meme provider
Merge branch 'master' of https://github.com/Ziemin/memoizer.git into memoizer-gui
Added new and reorganized old icons resources.
Created simple html pages for "About" and "Help" tab.
Removed old codes
Redesigned MainWindow GUI. Changed display into tabbed view. Added
classes providing different types of tabs.
Changed title of Memes in JInfinityScrollView
Set up pluginLoader class. SimpleMemoizerModel now truely use
MemeProvider class. Bug fix for MemeProvider.
Updated pom.xml