Moved shortcut button to info screen

...main/java/de/kuschku/quasseldroid/ui/chat/ChatActivity.kt

.../quasseldroid/ui/chat/info/channel/ChannelInfoFragment.kt

.../de/kuschku/quasseldroid/ui/chat/info/user/IrcUserInfo.kt

...uschku/quasseldroid/ui/chat/info/user/UserInfoFragment.kt

...va/de/kuschku/quasseldroid/util/ShortcutCreationHelper.kt

app/src/main/res/drawable/ic_link.xml

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

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

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

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