http handling in component browser

[AdRiley]

If a user enters something that looks like a web api in the component browser we should suggest adding a data.fetch with that text as the argument

[farmaazon]

Refinement notes:

• For putting URL, use macroSuffix or something similar. Remember that URL needs to be put in "" and escaped.

[farmaazon]

Estimate includes some small refactorings.