Add Range.staticinterfaces property
Improve function name accuracy
Improve efficiency of Ctnr.build_legacy_classes
Build VRF subclasses for static interfaces

Also improve efficiency.
Fix dumb syntax error
Fix range 'allow members of' statement
Fix spelling and capitalization
Improve error message formatting
Don't be so condescending
Avoid needless backslashes
Fix spelling, capitalization, and grammar
Format error messages slightly more nicely
Fix incorrect error message
Parens are clearer here than a comma
Dynamic interface form now only displays dynamic ranges in its range field
fix erroneous default dhcp_build configuration
Merge pull request #401 from drkitty/english-and-formatting

English and formatting
Merge pull request #397 from drkitty/dhcp-class-fixes

DHCP class generation fixes
Merge pull request #409 from church29/DynamicIntr_DynamicRange

The dynamic interface form should limit the range choices to dynamic ranges
Don't prune interfaceless systems during migration