Bump to next development cycle

Signed-off-by: Jenkins <jenkins@imagej.net>
Use primary Jenkins URL

It already defaults to the ImageJ view anyway.
Remove obsolete imagej-maven-plugin Eclipse config

The set-rootdir goal moved to the scijava-maven-plugin.

And anyway, it is bad to have lifecycle-mapping configuration outside of
a profile triggered by the use of M2E; see:
http://stackoverflow.com/a/23707050/1207769
Reintegrate version management into pom-imagej
Add ImgLib2 and SCIFIO dependency management

Then, pom-imglib2 and pom-scifio can extend pom-imagej to inherit the
complete Bill of Materials.