Added Theming

app/build.gradle

app/src/main/AndroidManifest.xml

...schku/quasseldroid_ng/service/ClientBackgroundThread.java

...ain/java/de/kuschku/quasseldroid_ng/ui/LoginActivity.java

...uschku/quasseldroid_ng/ui/chat/ChannelDetailActivity.java

...java/de/kuschku/quasseldroid_ng/ui/chat/MainActivity.java

...quasseldroid_ng/ui/chat/chatview/ChatMessageRenderer.java

...chku/quasseldroid_ng/ui/chat/drawer/BufferViewHolder.java

...e/kuschku/quasseldroid_ng/ui/chat/util/ServiceHelper.java

...java/de/kuschku/quasseldroid_ng/ui/settings/Settings.java

...kuschku/quasseldroid_ng/ui/settings/SettingsActivity.java

.../java/de/kuschku/quasseldroid_ng/ui/theme/AppContext.java

...in/java/de/kuschku/quasseldroid_ng/ui/theme/AppTheme.java

...e/kuschku/quasseldroid_ng/ui/theme/PreferenceStrings.java

...n/java/de/kuschku/quasseldroid_ng/ui/theme/ThemeUtil.java

...ava/de/kuschku/util/irc/format/IrcFormatDeserializer.java

...main/java/de/kuschku/util/servicebound/BoundActivity.java

...main/java/de/kuschku/util/servicebound/BoundFragment.java

...e/kuschku/util/ui/preferences/MaterialListPreference.java

...ava/de/kuschku/util/ui/preferences/SeekBarPreference.java