Feature/introduction page

[Blaarkies]

Theme

• Dark-mode; on which side of the fence for dark/light theme are you? doesn't matter, you can now select the one you prefer
  • It will automatically detect your browser preference, but you can tap the sun/moon icon in the top left to switch it per device
• Improved some theme aspects and layout across the whole site
• Moved the Tutorial button to the lower-left orange panel; that panel is contextual to whichever page is active, just like the tutorial is

  Introduction Page

• This is some article content to provide background about how Delta-v and CommNets work; it will be useful for new players
• It helps the website with Search Engine Optimization; it should help to increase the number of users

  Fixes

• Split the website's internal structure to allow faster loading
• Removed dodgy ad network; the types of things showing up there was never what I signed up for

  URL Routes

• You might notice they now add '/calculators' as part of the route to the dv-planner or signal-check
  • Don't worry about the old routes/links you bookmarked, they will still function as if nothing changed
• This proper route structure allows for faster site loading, and prepares a foundation for more future improvements