Added setAxes method to ImageMetadata

Added a convenience method to ImageMetadata that sets both the axis
types and axis lengths in a single signature.

Motivated by the restructuring of axis types and axis lengths, as the
lengths can no longer be set independently of the types.
Refactored ICSFormat axis population

Instead of building arrays to populate the axes, they are now added
incrementally to make the logic clearer.
Updated scijava-common to 1.0.1

The scijava-common jar has been updated to the 1.0.1 snapshot.
Added SCIFIOApp

Added a scijava-common App implementation for SCIFIO. This plugin is
discovered by the AppService and provides version information, allowing
the scijava-common context to query and report the discovered SCIFIO
version.