Backport v2 styling to v1

[duncte123]

Decided that improving v1 is the better alternative

Conversion Checklist

• [x] Marathon Schedule
• [x] Marathon schedule arrows are wrong color ( @BobChao87 )
• [x] Site Homepage
• [x] Marathon homepage
• [x] User Profile
• [x] Marathon Submissions (Needs a bit more work than I want to put in at this moment)
• [x] Callendar page freezes application (caused by app-marathon-sidebar-overview and router module)
• [x] Language in URL (https://github.com/gilsdav/ngx-translate-router/tree/4.0.1)
• [x] Figure out how to put HTML in our translated strings
• [x] Fix HTML in translated string variable duplicates on refresh
• [x] About page
• [x] Login buttons in homepage block are currently missing
• [x] Header updates
• [x] Add "new marathon" button
• [x] marathon schedule arrows should not be super wide (caused by ads)