Add default light theme and update other themes

novelwriter/assets/themes/default_light.conf

@@ -0,0 +1,31 @@
+[Main]
+name        = Default Light Theme
+description = The novelWriter standard light theme
+author      = Veronica Berglyd Olsen
+credit      = Veronica Berglyd Olsen
+url         = https://github.com/vkbo/novelWriter
+license     = CC BY-SA 4.0
+licenseurl  = https://creativecommons.org/licenses/by-sa/4.0/
+icontheme   = typicons_light
+
+[Palette]
+window          = 239, 239, 239
+windowtext      =   0,   0,   0
+base            = 255, 255, 255
+alternatebase   = 239, 239, 239
+text            =   0,   0,   0
+tooltipbase     = 255, 255, 220
+tooltiptext     =   0,   0,   0
+button          = 239, 239, 239
+buttontext      =   0,   0,   0
+brighttext      = 255, 255, 255
+highlight       =  48, 135, 198
+highlightedtext = 255, 255, 255
+link            =   0,  84, 255
+linkvisited     =   0,  84, 255
+
+[GUI]
+helptext        =  92,  92,  92
+statusnone      = 120, 120, 120
+statussaved     = 200,  15,  39
+statusunsaved   =   2, 133,  37