Bug fix #641
New entity sub-generator, which supports creating fields

We can now create fields in the entity sub-generator: we generate the entity, the unit tests, the liquibase change log, and the JavaScript/HTML front end.

Fix #640 #531
Corrected Travis build
Corrected Travis build
Cleaned up old db-changelog-001.xml file
Add newly created entities automatically to the main menu
Deprecated the jhipster-loaded agent
Corrected Date serialization/deserialization with MongoDB option
Added new tests for creating fields
Deprecated the jhipster-loaded agent
Release v1.3.0
Fix #646
Fix #647
Formatting
First working implementation of #649
Added a question to better display relationships in AngularJS

Improved #649
Improved documentation
Generate BigDecimal fields in the entity sub-generator

Fix #651
Release v1.4.0
Bug fix #348, #652