Add typescript

[cgewecke]

#36 Typescript

• Migrates the main application files to typescript using a permissive tsconfig which allows javascript. Test files, ui and js scripts remain in js.
• Adds tslint step to CI
• All the types / ts dependencies are added as dev deps. Did this on assumption that project will be published as a docker. tsc is run during the docker initialization & the application consumes its code as transpiled JS from thedist/ folder.
• Unit tests are run using ts-node, directly from ./src

Running:

docker-compose -f docker-compose-testing.yaml up --build

...launches a server available at localhost:1234 and a local ganache instance with deployed contracts that can be used for manual testing. Docker output including contract addresses is visible in the terminal.

_{View in Huly HI-1179}

[cgewecke]

@edisinovcic This is all rebased and should be ready for a final look through I guess...

[cgewecke]

Rebased for #57 via #45

[cgewecke]

@edisinovcic I'm merging this to staging per gitter conversation but it that's not what you intended we can always revert :)