guy fawkes mask redesign (E145)

[yukal]

Just a new version with some technical improvements:

• kept the same style
• same line thickness
• symmetry is maintained
• no transformations with matrix (pure math nodes)
• reduce svg size using grouped styles

Additional

• fix grid without using transformation (e.g. transform="translate(72) rotate(90)")

Testing

Layers
  #line layer existing?
    ✔   E145-v2.svg should have a single #line layer
    ✔   E145-v3.svg should have a single #line layer

  #color layer existing?
    ✔   E145-v2.svg should have a single #color layer
    ✔   E145-v3.svg should have a single #color layer

  #grid layer existing?
    ✔   E145-v2.svg should have a single #grid layer
    ✔   E145-v3.svg should have a single #grid layer

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