Added formatting menu

app/build.gradle

app/src/main/AndroidManifest.xml

app/src/main/java/de/kuschku/libquassel/Client.java

.../java/de/kuschku/libquassel/syncables/types/Identity.java

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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