Update SettingsIcons

[hugo9655]

Note: Feel free to use my version until this PR gets merged.

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Misc:

• Closes issues: #10 & #11.
• Icon fixes & new icons (including for some of the experiments pages).
• Tagged experiment-specific IDs in _user.scss
• Sorted _server.scss IDs in order.

Modified:

• Replaced with better looking icons:
  • Developer Options - svg/developeroptions.svg
  • Nitro - svg/discordnitro.svg
  • My Account - svg/myaccount.svg
  • Onboarding - svg/onboarding.svg
  • Overview - svg/overview.svg
• Reduced padding:
  • Soundboard - svg/soundboard.svg
  • Custom Invite Link - svg/vanityurl.svg
  • Vesktop Settings - svg/vesktop.svg

Added:

• Content & Social - svg/contentsocial.svg
• Linux Settings - svg/linux.svg
• Revenue Storybook - svg/revenuestorybook.svg
• Virtual Currency Configuration - svg/virtualcurrencyconfiguration.svg
• Intl Testing - svg/intltesting.svg
• Nameplates Preview Tool - svg/nameplatespreviewtool.svg
• Web Setting Tree Tool - svg/websettingtreetool.svg
• Access - svg/access.svg
• Boost Perks - svg/boostperks.svg
• Engagement - svg/engagement.svg
• Profile - svg/profile.svg

Removed: (these pages no longer exist)

• Friend Requests - svg/friendrequests.svg
• Powermode Settings - svg/powermodesettings.svg
• RTC Speed Test - svg/rtcspeedtest.svg
• StartupTimings - svg/startuptimings.svg

[alek-dokmajyan]

Hi ive updated my issue with a link to a new theme file i created that adds all of the missing icons could you add it to this pull request?

[hugo9655]

this already includes icons for everything