Rename package from 'nw' to 'novelwriter' (#868)

* Rename nw folder to novelwriter
* Rename nw to novelwriter in auxiliary files
* Rename nw to novelwriter in main app source
* Rename nw to novelwriter in tests
* Make setup script for pdf docs less spammy

novelwriter/assets/icons/typicons_colour_light/icons.conf

@@ -0,0 +1,63 @@
+##
+# Icons:     Typicons Colour Light
+# Source:    https://github.com/stephenhutchings/typicons.font
+# Credit:    Stephen Hutchings
+# Modified:  Veronica Berglyd Olsen
+# Additions: hash.svg
+##
+
+[Main]
+name           = Typicons Colour Light
+description    = Colourised icons for light GUI theme based on Typicons.
+author         = Veronica Berglyd Olsen (adaptation)
+credit         = Stephen Hutchings (icon design)
+url            = https://github.com/stephenhutchings/typicons.font
+license        = CC BY-SA 4.0
+licenseurl     = https://creativecommons.org/licenses/by-sa/4.0/
+
+[Map]
+cls_none       = cancel.svg
+cls_novel      = book.svg
+cls_plot       = puzzle.svg
+cls_character  = user.svg
+cls_world      = location.svg
+cls_timeline   = calendar.svg
+cls_object     = key.svg
+cls_entity     = flag.svg
+cls_custom     = star.svg
+cls_archive    = delete.svg
+cls_trash      = trash.svg
+proj_document  = document-text.svg
+proj_title     = document-title.svg
+proj_chapter   = document-chapter.svg
+proj_scene     = document-scene.svg
+proj_note      = document-note.svg
+proj_folder    = folder.svg
+doc_h0         = heading0.svg
+doc_h1         = heading1.svg
+doc_h2         = heading2.svg
+doc_h3         = heading3.svg
+doc_h4         = heading4.svg
+delete         = delete.svg
+add            = plus.svg
+remove         = minus.svg
+close          = times.svg
+refresh        = refresh.svg
+maximise       = arrow-maximise.svg
+minimise       = arrow-minimise.svg
+done           = input-checked.svg
+search         = search.svg
+search-replace = search-replace.svg
+clear          = backspace.svg
+save           = download.svg
+edit           = pencil.svg
+check          = tick.svg
+cross          = times.svg
+hash           = hash.svg
+reference      = at.svg
+backward       = chevron-left.svg
+forward        = chevron-right.svg
+sticky-on      = pin.svg
+sticky-off     = pin-outline.svg
+bullet-on      = media-record.svg
+bullet-off     = media-record-outline.svg