added form to show what unnecessary filetypes were found
loading filetypes that are to be considered non-plugin files from disc
renamed method to clear up purpose
now using list of filetypes to determine what files can be deleted
introduced new model class for non plugin file types to include more descriptive info about the filetype
added new method that tells the number of various filetypes and includes descriptive info about these types
changed has files and folders to remove to use new mehod, also changed signature to take advantage of new methods
list view in new form is populated with info and checked items is stored in a local property
changed non plugin file scanner to log errors when removing files. and to report how many items were removed and errors to the ui using a new class
changed ui helper for non plugin file scanner to contain the scanner itself
both user folder form and install plugins form use the ui helper correctly now
[side stuff] changed resize columns to use the proper local members instead of using magic ints to auto resize columns in list views
also spaces and tabs stuff
Merge pull request #121 from IrradiatedGames/improve-remove-unnecessary-files

Improve remove unnecessary files