fixed links to issues
fixed possible NPE
annotare required changes
removed 'organisational' term restriction;
fixed bug in checking for library construction and sequencing protocols;
improved approach to find the  experiment type (MA or HTS) by AEExperimentType field
Added Assay Node Check: An assay node must be described by a 'sequencing' protocol
 fixes #10
Added Assay Node check: If 'Technology Type' value = 'array assay' then incoming nodes must be 'Labeled Extract' nodes only
fixes #8
Added Extract Node Check: An extract node must be described by a 'construction library' protocol
fixes #4
Added Labeled Extract Node Check: Number of unique labels in a experiment should not be greater than the number of channels
fixes #14
[maven-release-plugin] prepare release magetabcheck-1.7
[maven-release-plugin] prepare for next development iteration
added release notes for v1.7