#86 - Added all supporting Spring Data modules to the BOM.

Backport of: #84.
#85 - Upgraded to Querydsl 3.3.4.

Backport of: #76.
#87 - Updated build plugin version to the latest ones available.

Wagon SSH - 2.3 -> 2.6
Surefire - 2.12 -> 2.17
JAR - 2.3.1 -> 2.4
Source - 2.1.2 -> 2.2.1
JavaDoc - 2.9 -> 2.9.1
Deploy - 2.7 -> 2.8.1

Backport of: #78.