When I started to develop android applications I was kind of sceptical about Eclipse and this "new school IDE whatever" but after short time my only thought become: How did I worked successfull in the past without this nice stuff like refactoring, project wide search etc.
A quick google research pops up the following three "plugins":
However, I'm still feeling kind of insecure with installing additional Eclipse "stuff" so the ideal solution would be easy to handle like adding another repo to the marketplace and download the stuff from there.
If all these words been to confusing, just think of it as "how the heck can I get a nice Eclipse environment for web developing?"
I think a good answer would point out some of the differences between multiple solutions and maybe provide an easy installation guide (in-eclipse solution give bonus points).