Updated translations and started working on accessibility

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

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

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

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

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

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

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

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

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

app/src/main/res/values-de/strings.xml

app/src/main/res/values-en/strings.xml

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