* Adds aliases to Webpack Build
* Use `ui` Webpack alias
* Use `views` alias
* Use `modals` aliase
* Use `providers` aliase
* Use `contracts` aliase
* Use '~' aliase
* from `ui` to from `~/ui`
* from to from
* from `modals` to from `~/modals`
* from `providers` to from `~/redux/providers`
* from `contracts` to from `~/contracts`
* Updated Webpack App config
- checkIfTxFailed & waitForBlockConfirmations are both general-purpose
- checkIfVerified, checkIfRequested & postToServer are sms verification-specific
- fixed imports
- renamed `uiSteps` to `phases` to make the distinction between
actual (tiny) steps and visible UI steps clear
- lookup `requestTx` if request has already been sent
- change code regex to match ethcore/sms-verification@59acb73
