Upgrade to java 1.8
[core] Add config option to reload as part of the BC
[core] Fix unit test config file
[core] Peer: mark peers as DOWN is not alive since X time

 - Add new index /page (renamed for old /registry)

- Fix events sent many times - fix #16

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

[fix] Remove documentation on GChange market/registry

[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

[fix] email subscription scheduled job not started
[fix] Allow access to index subscription/execution
[enh] synchronize index subscription/execution

- Peer: Add BMATOR endpoint API