Update Project Tree (#847)

* Rename index textCounts to fileMeta and add main header level
* Add new icons for document layouts
* Add function in NWItem to describe the item
* Use the icons and description in the project tree and details panel
* Remove flags column and add status column with optional full text
* Update handling and display of header level in editor
* Fix potential bug in project tree
* Update tests

tests/reference/baseConfig_novelwriter.conf

@@ -7,7 +7,10 @@ guidark = False
 guifont = 
 guifontsize = 11
 lastnotes = 0x0
-guilang = en-GB
+guilang = en_GB
+hidevscroll = False
+hidehscroll = False
+fullstatus = True
 
 [Sizes]
 geometry = 1200, 650
@@ -20,8 +23,6 @@ docpane = 400, 400
 viewpane = 500, 150
 outlinepane = 500, 150
 fullscreen = False
-hidevscroll = False
-hidehscroll = False
 
 [Project]
 autosaveproject = 60