[enh] better index user WOT leave events
[enh] add certCount in <currency>/blockstat index

[fix] peer index not executed
[fix] email subcription not executing
[enh] Better message when error on http request
[enh] new option to send email subscription at startup

- Peer: Add BMATOR endpoint API

[enh] Upgrade to elasticsearch 2.4.5

[fix] fix typo on plugin settings 'startlls'

[fix] remove unused github maven plugin

[fix] fix unit test

- HttpService: ignore cookie (avoid error cause by Yunohost SSO)
- Email subscription: fix scheduler delay

- Client: transaction options ar now optional (ask in prompt)
- Network peers : filter on currency, to evict bad currrency peers

- Core  : entities currency and peer model use String for ID
- ES : add new DAO classes
- ES : Code refactoring to an extended Client

- Client: network > Optimize highlight
- Client: network > Allow to change default timeout