Cleanup of mostly asset files

- Fixes for all files
 - constexpr cleanup
 - Cosmetic changes
 - Remove punctuation from the end of messages

scripts/core_scripts.lua

@@ -4,20 +4,20 @@ openspace.documentation = {
         Arguments = { sceneGraphNode = "[ String ]" },
         Documentation = "This function marks the scene graph nodes identified by name " ..
         "as interesting, which will provide shortcut access to focus buttons and " .. 
-        "featured properties."
+        "featured properties"
     },
     {
         Name = "markInterestingTimes",
         Arguments = { times = "[ Table ]" },
         Documentation = "This function marks interesting times for the current scene, " ..
-        "which will create shortcuts for a quick access."
+        "which will create shortcuts for a quick access"
     },
     {
         Name = "removeInterestingNodes",
         Arguments = { sceneGraphNode = "[ String ]" },
         Documentation = "This function removes unmarks the scene graph nodes " ..
         "identified by name as interesting, thus removing the shortcuts from the " ..
-        "features properties list."
+        "features properties list"
     },
     {
         Name = "setDefaultGuiSorting",
@@ -32,13 +32,13 @@ openspace.documentation = {
         Documentation = "This function sets the default values for the dashboard " ..
         "consisting of 'DashboardItemDate', 'DashboardItemSimulationIncrement', " ..
         "'DashboardItemDistance', 'DashboardItemFramerate', and " ..
-        "'DashboardItemParallelConnection'."
+        "'DashboardItemParallelConnection'"
     },
     {
         Name = "rebindKey",
         Arguments = { oldKey = "String", newKey = "String" },
         Documentation = "Rebinds all scripts from the old key (first argument) to the " ..
-        "new key (second argument)."
+        "new key (second argument)"
     }
 }