Add razerdefault18 for Tenkeyless layout

[z3ntu]

Fixes #117

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@XECortex can you please try this branch and see if the layout matches and all the keys correspond to the physical keys?

[slugcat-dev]

Almost working, there are two keys I can't control as I have a german keyboard layout and the software uses the US layout. Also, the keyboard doesn't have an illuminated logo; RazerGenie crashed when I had clicked it.

ASSERT failure in QVector<T>::operator[]: "index out of range", file /usr/include/qt/QtCore/qvector.h, line 457
zsh: abort      ./builddir/src/razergenie

Keys not working are < (right of shift) and # (left of ENTER)

[z3ntu]

Hi, sorry for the delay I forgot about this issue. Can you please try again with the latest commit? I've added the german layout and it should be correct now I hope.