#133 reformatting and refactoring of ApplicationDirectoryAssembliesTypeCatalogue
* moved field assignment from constructor to initializer
* inlined single use private methods
* inlined variables
* shortened variable names
* replaced foreach continuation with Linq method call
* reduced nesting
* formatted comments
* whitespace
Merge pull request #136 from adamralph/133

#133 minor reformatting and refactoring of ApplicationDirectoryAssembliesTypeCatalogue