Fixed the drawer issues

...asseldroid_ng/ui/chat/BufferViewConfigSpinnerAdapter.java

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

...asseldroid_ng/ui/chat/drawer/BufferViewConfigAdapter.java

app/src/main/res/drawable-hdpi/ic_plus_dark.png

app/src/main/res/drawable-mdpi/ic_plus_dark.png

app/src/main/res/drawable-xhdpi/ic_plus_dark.png

app/src/main/res/drawable-xxhdpi/ic_plus_dark.png

app/src/main/res/drawable-xxxhdpi/ic_plus_dark.png

app/src/main/res/layout-w720dp/activity_main.xml

app/src/main/res/layout/activity_main.xml

app/src/main/res/layout/widget_md_spinner_item.xml

app/src/main/res/menu/chat.xml

app/src/main/res/menu/chatlist.xml

app/src/main/res/values/attrs.xml

app/src/main/res/values/styles.xml