Update docs to 0.8.0-rc1
Merge remote-tracking branch 'origin/master' into release-0.8.0

Conflicts:
	docs/.meteor/release
Delete docs for preserve
Delete docs for constant
Delete docs for isolate
Update docs for {{> loginButtons}}
a bunch of updates to Templates api section
update license file for copied/adapted code packages/html5-tokenizer
No more spark and universal-events packages
No more domutils and liverange packages
Remove unmaintained animation package.

We'll get back to animation after we ship 0.8.0.
Remove now-deprecated preserve-inputs package from examples

Also, add a helpful log message to help users know to remove the package.
Fix tests
Remove madewith package
Merge branch 'release-0.8.0' into devel