[styles] Improve direction arrows

Signed-off-by: Yannik Bloscheck <git@yannikbloscheck.com>

data/styles/default/dark/symbols/arrow-m.svg

@@ -1,3 +1 @@
-<svg version="1.1" viewBox="0 0 21 8" width="16" height="6" xmlns="http://www.w3.org/2000/svg">
- <path transform="matrix(-1 0 0 1 21 0)" d="m8.4108 3h12.589v2h-12.611l0.61119 3-9-4 9-4-0.58921 3z" fill="#FFF" fill-rule="evenodd" opacity=".6"/>
-</svg>
+<svg height="7" viewBox="0 0 17 7" width="17" xmlns="http://www.w3.org/2000/svg"><path d="m6.40838857 2.28571429h9.59161903v1.52380952h-9.60838093l.46566857 2.28571429-6.85714286-3.04761905 6.85714286-3.04761905-.44892191 2.28571429z" fill="#fff" fill-opacity=".6" fill-rule="evenodd" transform="matrix(-1 0 0 1 16.908 .6667)"/></svg>

data/styles/default/dark/symbols/arrow-s.svg

@@ -1,3 +1 @@
-<svg version="1.1" viewBox="0 0 15 5" width="11" height="4" xmlns="http://www.w3.org/2000/svg">
- <path transform="matrix(-1 0 0 1 15 0)" d="m6.1036 2h8.8964v1h-8.9041l0.2134 2-6.3093-2.5 6.3093-2.5-0.20572 2z" fill="#FFF" fill-rule="evenodd" opacity=".6"/>
-</svg>
+<svg height="5" viewBox="0 0 12 5" width="12" xmlns="http://www.w3.org/2000/svg"><path d="m4.47597333 1.46666667h6.52402667v.73333333h-6.52967333l.15649333 1.46666667-4.62682-1.83333334 4.62682-1.83333333-.15086133 1.46666667z" fill="#fff" fill-opacity=".6" fill-rule="evenodd" transform="matrix(-1 0 0 1 11.9078 .6667)"/></svg>

data/styles/default/dark/symbols/arrow-xs.svg

@@ -1,3 +1 @@
-<svg version="1.1" viewBox="0 0 9 3" width="7" height="2" xmlns="http://www.w3.org/2000/svg">
- <path transform="matrix(-1 0 0 1 9 0)" d="m2.5 1h6.5v1h-6.5v-1zm-2.5 0.5 2.5-1.5v3l-2.5-1.5z" fill="#FFF" fill-rule="evenodd" opacity=".6"/>
-</svg>
+<svg height="3" viewBox="0 0 8 3" width="8" xmlns="http://www.w3.org/2000/svg"><path d="m1.94444444.77777778h5.05555556v.77777778h-5.05555556zm-1.94444444.38888889 1.94444444-1.16666667v2.33333333z" fill="#fff" fill-opacity=".6" fill-rule="evenodd" transform="matrix(-1 0 0 1 7.9078 .6667)"/></svg>

data/styles/default/light/symbols/arrow-m.svg

@@ -1,3 +1 @@
-<svg version="1.1" viewBox="0 0 21 8" width="16" height="6" xmlns="http://www.w3.org/2000/svg">
- <path transform="matrix(-1 0 0 1 21 0)" d="m8.4108 3h12.589v2h-12.611l0.61119 3-9-4 9-4-0.58921 3z" fill="#747E86" fill-rule="evenodd"/>
-</svg>
+<svg height="7" viewBox="0 0 16 7" width="16" xmlns="http://www.w3.org/2000/svg"><path d="m6.40838857 2.28571429h9.59161903v1.52380952h-9.60838093l.46566857 2.28571429-6.85714286-3.04761905 6.85714286-3.04761905-.44892191 2.28571429z" fill="#46361e" fill-opacity=".4" fill-rule="evenodd" transform="matrix(-1 0 0 1 16.0002 0)"/></svg>

data/styles/default/light/symbols/arrow-s.svg

@@ -1,3 +1 @@
-<svg version="1.1" viewBox="0 0 15 5" width="11" height="4" xmlns="http://www.w3.org/2000/svg">
- <path transform="matrix(-1 0 0 1 15 0)" d="m6.1036 2h8.8964v1h-8.9041l0.2134 2-6.3093-2.5 6.3093-2.5-0.20572 2z" fill="#747E86" fill-rule="evenodd"/>
-</svg>
+<svg height="4" viewBox="0 0 11 4" width="11" xmlns="http://www.w3.org/2000/svg"><path d="m4.47597333 1.46666667h6.52402667v.73333333h-6.52967333l.15649333 1.46666667-4.62682-1.83333334 4.62682-1.83333333-.15086133 1.46666667z" fill="#46361e" fill-opacity=".4" fill-rule="evenodd" transform="matrix(-1 0 0 1 11 0)"/></svg>

data/styles/default/light/symbols/arrow-xs.svg

@@ -1,3 +1 @@
-<svg version="1.1" viewBox="0 0 9 3" width="7" height="2" xmlns="http://www.w3.org/2000/svg">
- <path transform="matrix(-1 0 0 1 9 0)" d="m2.5 1h6.5v1h-6.5v-1zm-2.5 0.5 2.5-1.5v3l-2.5-1.5z" fill="#747E86" fill-rule="evenodd"/>
-</svg>
+<svg height="3" viewBox="0 0 7 3" width="7" xmlns="http://www.w3.org/2000/svg"><path d="m1.94444444.77777778h5.05555556v.77777778h-5.05555556zm-1.94444444.38888889 1.94444444-1.16666667v2.33333333z" fill="#46361e" fill-opacity=".4" fill-rule="evenodd" transform="matrix(-1 0 0 1 7 0)"/></svg>