Rename handle mirroring to colinear

frontend/assets/icon-16px-two-tone/mouse-hint-lmb-double.svg

@@ -1,4 +1,4 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
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+	<path class="bright" d="M4.5,3.8c-0.2-0.7,0-1.4,1-1.6C6.7,2,7.2,3.4,5.4,4.6c-0.8,0.5-1.7,1.2-2.1,2C3,7.2,3,8,3,8h5V6C7.5,6.6,5.4,6.6,5.4,6.6C5.5,5.8,7,5.4,7.6,4.3C8.5,2.7,7.7,1,6,1C4.2,1,2.5,2,3.2,4.6L4.5,3.8z" />
 	<path class="dim" d="M10,1H9v1h1c1.1,0,2,0.9,2,2v6c0,2.21-1.79,4-4,4s-4-1.79-4-4V9H3v1c0,2.76,2.24,5,5,5s5-2.24,5-5V4C13,2.35,11.65,1,10,1z" />
 </svg>

frontend/assets/icon-16px-two-tone/mouse-hint-rmb-double.svg

@@ -1,4 +1,4 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
-	<path class="bright" d="M10,1H8v7h5V4C13,2.3,11.7,1,10,1z M12,7H9.1c0,0,0-0.6,0.2-1c0.2-0.6,0.8-1.1,1.3-1.5c0.9-0.8,0.4-1.8-0.4-1.6C9.6,3.1,9.9,4.1,9.9,4.1H9.1c-0.3-1,0.1-2.2,1.3-2.1c1,0.1,1.6,1.1,1.4,2.1C11.6,5,10.6,5.4,10.5,6H12V7z" />
+	<path class="bright" d="M10.4,6.6c0.1-0.8,2.1-1.2,2.4-2.4C13.3,2.8,12,1,10.3,1c-2.2,0-2.8,2.2-2,3.8l1.1-0.9c0,0-0.6-1.3,0.5-1.7c1-0.4,2.5,1.2,0.7,2.2C9.9,5,8.7,5.7,8.3,6.6C8,7.2,8,8,8,8h5V6C12.5,6.6,10.4,6.6,10.4,6.6z" />
 	<path class="dim" d="M6,1h1v1H6C4.9,2,4,2.9,4,4v6c0,2.21,1.79,4,4,4s4-1.79,4-4V9h1v1c0,2.76-2.24,5-5,5s-5-2.24-5-5V4C3,2.35,4.35,1,6,1z" />
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