[MOVED] [WIP] Tor support + FixTweet support

[suprstarrd]

work for #231.

this currently WIP pull request makes a few changes currently:

• accessing cobalt from a .onion hostname in a browser detected to be Firefox will hide the "paste from clipboard" option to discourage Tor users from changing settings that may decrease their security / increase their fingerprintability
• .onion links for Twitter/Reddit now work in the URL textbox
• The BetterTwitFix link fixvx.com now works in the URL textbox
• all FixTweet links now work in the URL textbox
• the maximum length of the textbox has been increased to 256, mainly to accommodate for allowing the very long (and maybe longer in the future) .onion links
• host overrides have been organized alphabetically
• [actively working on Tor support, so there will probably be more changes]

this PR is best done squashed I think but I can also re-commit these and make it properly named instead of being as it is right now

[suprstarrd]

closing this and splitting into two PRs:

• FixTweet support is in more Twitter link support (vxTwitter / BetterTwitFix, FxTwitter / FixTweet) #236
• Tor support is still being worked on - but commits will be cleaner