Add tool to watch for memory leaks

Merge pull request #87 from Financial-Times/memleak

Add memwatch to log possible memory leaks

No longer cache `/public` files

Merge pull request #84 from Financial-Times/no-cash

Don't cache

Fully switch to S3

Merge pull request #83 from Financial-Times/no-github

Hashed assets all the time

Use ft-next-logger

Merge pull request #82 from Financial-Times/use-logger

Use next-logger

Allow apps to opt into S3 asset hashing

Merge pull request #81 from Financial-Times/s3

Allow opt in to S3 asset hashing

Add organisation api metric rule

Merge pull request #80 from Financial-Times/organisations

Add organisations to the metrics

Apps will crash if they can't get flags on start up

Fixes bug where apps can get into a very odd state.

Upgrade next-metrics

Merge pull request #77 from Financial-Times/npm-metrics

Switch to npm version of next-metrics

v7.1.4

removed double body content

v7.1.3: Merge pull request #74 from Financial-Times/no-mustard

removed next-mustard dependency