Merge pull request #20 from tienvx/features/field-group-support

Features/field group support
Add 'enabled modules' report.
Fix missing argument.
Fix callback not found.
Fix 'passed by reference' warnings.
Merge pull request #23 from tienvx/features/enabled-modules

Features/enabled modules
Update at_doc.info

+ package to module info file.
Add comments.
Don't print 'Requires:' and 'Required by:' without information.
Add features support.
Fix warning.
Merge branch '7.x-1.x' into features/features
Merge pull request #25 from tienvx/features/features

Features/features
Support taxonomy report.
Show error icon if entity/field is not exported.
Only report 'Placed using taxonomy.'.
Remove taxonomy report route.
Don't print disabled modules.
Merge pull request #29 from tienvx/features/enabled-modules

Don't print disabled modules.
Merge pull request #26 from tienvx/features/report-taxonomy

Support taxonomy report.