[ImgBot] Optimize images

*Total -- 1,483.27kb -> 1,441.65kb (2.81%)

/images/icon.png -- 6.41kb -> 3.79kb (40.88%)
/images/crystal-logo-minimal.png -- 18.97kb -> 13.73kb (27.63%)
/assets/img/crystal-logo-minimal.png -- 18.97kb -> 13.73kb (27.63%)
/images/icons/android-chrome-512x512.png -- 14.54kb -> 11.23kb (22.72%)
/images/icons/android-chrome-192x192.png -- 5.58kb -> 4.37kb (21.69%)
/assets/favicons/android-chrome-512x512.png -- 2.90kb -> 2.42kb (16.78%)
/assets/favicons/safari-pinned-tab.svg -- 0.92kb -> 0.80kb (12.63%)
/images/icons/safari-pinned-tab.svg -- 0.92kb -> 0.80kb (12.63%)
/assets/favicons/mstile-150x150.png -- 1.14kb -> 1.01kb (11.09%)
/images/icons/mstile-150x150.png -- 5.47kb -> 4.88kb (10.84%)
/assets/favicons/android-chrome-192x192.png -- 1.15kb -> 1.12kb (2.8%)
/images/icons/apple-touch-icon.png -- 1.07kb -> 1.05kb (2.28%)
/assets/favicons/apple-touch-icon.png -- 1.08kb -> 1.06kb (2.17%)
/assets/fonts/fontawesome-webfont.svg -- 433.96kb -> 425.36kb (1.98%)
/assets/fonts/fa-regular-400.svg -- 140.94kb -> 138.77kb (1.54%)
/assets/fonts/fa-solid-900.svg -- 829.24kb -> 817.54kb (1.41%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

assets/favicons/safari-pinned-tab.svg

@@ -1,19 +1 @@
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-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
- "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
-<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
- width="1024.000000pt" height="1024.000000pt" viewBox="0 0 1024.000000 1024.000000"
- preserveAspectRatio="xMidYMid meet">
-<metadata>
-Created by potrace 1.14, written by Peter Selinger 2001-2017
-</metadata>
-<g transform="translate(0.000000,1024.000000) scale(0.100000,-0.100000)"
-fill="#000000" stroke="none">
-<path d="M5850 9480 c-415 -418 -1564 -1569 -2553 -2559 l-1798 -1801 1102
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-</g>
-</svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="1365.333" height="1365.333" preserveAspectRatio="xMidYMid meet" version="1.0" viewBox="0 0 1024 1024"><metadata>Created by potrace 1.14, written by Peter Selinger 2001-2017</metadata><g fill="#000" stroke="none"><path d="M5850 9480 c-415 -418 -1564 -1569 -2553 -2559 l-1798 -1801 1102 -1101 1101 -1102 354 354 354 354 -747 747 -748 748 1455 1458 c800 801 1950 1953 2555 2560 l1100 1102 -710 -1 -710 0 -755 -759z" transform="translate(0.000000,1024.000000) scale(0.100000,-0.100000)"/><path d="M6175 6970 l-350 -350 750 -751 750 -750 -1360 -1357 c-748 -747 -1900 -1898 -2559 -2560 l-1200 -1202 708 0 707 0 2560 2560 2560 2560 -1100 1100 c-605 605 -1104 1100 -1108 1100 -5 0 -166 -158 -358 -350z" transform="translate(0.000000,1024.000000) scale(0.100000,-0.100000)"/></g></svg>

images/icons/safari-pinned-tab.svg

@@ -1,19 +1 @@
-<?xml version="1.0" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
- "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
-<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
- width="1024.000000pt" height="1024.000000pt" viewBox="0 0 1024.000000 1024.000000"
- preserveAspectRatio="xMidYMid meet">
-<metadata>
-Created by potrace 1.14, written by Peter Selinger 2001-2017
-</metadata>
-<g transform="translate(0.000000,1024.000000) scale(0.100000,-0.100000)"
-fill="#000000" stroke="none">
-<path d="M5850 9480 c-415 -418 -1564 -1569 -2553 -2559 l-1798 -1801 1102
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-1100 c-605 605 -1104 1100 -1108 1100 -5 0 -166 -158 -358 -350z"/>
-</g>
-</svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="1365.333" height="1365.333" preserveAspectRatio="xMidYMid meet" version="1.0" viewBox="0 0 1024 1024"><metadata>Created by potrace 1.14, written by Peter Selinger 2001-2017</metadata><g fill="#000" stroke="none"><path d="M5850 9480 c-415 -418 -1564 -1569 -2553 -2559 l-1798 -1801 1102 -1101 1101 -1102 354 354 354 354 -747 747 -748 748 1455 1458 c800 801 1950 1953 2555 2560 l1100 1102 -710 -1 -710 0 -755 -759z" transform="translate(0.000000,1024.000000) scale(0.100000,-0.100000)"/><path d="M6175 6970 l-350 -350 750 -751 750 -750 -1360 -1357 c-748 -747 -1900 -1898 -2559 -2560 l-1200 -1202 708 0 707 0 2560 2560 2560 2560 -1100 1100 c-605 605 -1104 1100 -1108 1100 -5 0 -166 -158 -358 -350z" transform="translate(0.000000,1024.000000) scale(0.100000,-0.100000)"/></g></svg>