Blendid 5.0

[benjtinsley]

this is the total work from the blendid5 feature branch.

changes included:

• updated outdated dependencies
• removes non-default init tasks to slim down blendid's range of responsibilities
• removes extras/
• adds in js and css linting

[benjtinsley]

@nhunzaker are you thinking the upgrade guide would be a part of the README, or its own document?

[nhunzaker]

@benjtinsley Usually I've included it in a CHANGELOG.md. I've also seen an UPGRADING.md doc in a few projects.