* squash# This is a combination of 10 commits2
fn: get available memory related changes
*) getAvailableMemory() improvements
*) early fail if requested memory too large to meet
*) tracking async and sync pools individually. Sync pool
is reserved for sync jobs only, while async pool can be
used by all jobs.
*) head room estimation for available memory in Linux.
* Update to docs, examples, and tutorial links
* Added categories to docs index page. Removed icons.
* Update to docs, examples, and tutorial links.
Added categories to docs index page. Removed icons.
* updates to docs upon review
* Extend extension mechanism to support per-route API extensions
* Tidy up comment
* Remove print statement
* Minor improvement to README
* Avoid calling c.Request.Context() twice
* Docker compose file for simpler dev env
* Updating readme, adding UI to compose
* Define dependencies between services
* Prometheus. Grafana
* Link Prometheus to Grafana service
* Addressing review comments
* Linking compose doc to common table of content
* add error to call model
closes#331
previously, for async this error was being masked completely even if it was
something useful like the image not existing. for sync, the error was returned
in the http request but now it's also being stored. this error itself can
cover a lot of landscape, it could be an error in getting a slot, pulling an
image, running a container, among other things. anyway, no longer being
masked. we can likely improve it in certain cases we run into in the future,
but it's open ended at the moment and not being masked like some errors in
sync http request returns (503 non-models.APIError) for now.
* tucks in callTrigger stuff to keep api clean
* adds swagger
* adds migration
* adds tests for datastore and agent to ensure behavior
* pull images before tests are ran
* gofmt migrations file
