URL bar enhancements

[gomarcd]

Initially while throwing this together, URL bar was just a simple input tag, nothing less nothing more.

This should be reworked to have the visual appeal and usability improved:

• Consider extent of input validation if any that makes sense to implement in this context
• The HTTP protocol section of the URL should be muted or toned down while remaining selectable/editable as normal
• URL bar text should not expand into/through the send button when lengthy text is entered
• Method dropdown should have better styling when clicked and be more seamlessly integrated into the URL bar area
• Pressing ESC should restore the current URL that was in the bar, just as a web browser URL bar behaves
• Pressing Enter/Return should do the same as pressing the Send button
• Pressing CMD+L or CTRL+L hotkey should focus the URL bar
• Entering an endpoint with or without any HTTP protocol should "just work" - how exactly that flow should be could still be debatable, so far am thinking - if nothing is entered, try http:// first and if there is a redirect to https:// then follow that - but in either case, the protocol should end up being displayed consistently in the URL bar based on what the actual request response ended up using - ie, if I type in ip.now/1.1.1.1 then I would still end up seeing https://ip.now/1.1.1.1 in the URL bar after hitting enter, as that is what the request used