add dependency projects to import paths when running DCD

dlangide.visualdproj

@@ -72,7 +72,7 @@
   <debuglevel>0</debuglevel>
   <debugids>DebugInfo DCD</debugids>
   <versionlevel>0</versionlevel>
-  <versionids>Unicode  USE_FREETYPE USE_LIBDPARSE USE_MAGO</versionids>
+  <versionids>Unicode  USE_FREETYPE</versionids>
   <dump_source>0</dump_source>
   <mapverbosity>3</mapverbosity>
   <createImplib>0</createImplib>

src/dlangide/ui/dsourceedit.d

@@ -83,7 +83,7 @@ class DSourceEdit : SourceEdit {
     /// returns project import paths - if file from project is opened in current editor
     string[] importPaths() {
         if (_projectSourceFile)
-            return _projectSourceFile.project.sourcePaths  ~ _projectSourceFile.project.builderSourcePaths;
+            return _projectSourceFile.project.importPaths;
         return null;
     }
 

src/dlangide/workspace/project.d

@@ -259,6 +259,29 @@ class Project : WorkspaceItem {
         return _builderSourcePaths; 
     }
 
+    private static void addUnique(ref string[] dst, string[] items) {
+        foreach(item; items) {
+            bool found = false;
+            foreach(existing; dst) {
+                if (item.equal(existing)) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found)
+                dst ~= item;
+        }
+    }
+    @property string[] importPaths() {
+        string[] res;
+        addUnique(res, sourcePaths);
+        addUnique(res, builderSourcePaths);
+        foreach(dep; _dependencies) {
+            addUnique(res, dep.sourcePaths);
+        }
+        return res;
+    }
+
     string relativeToAbsolutePath(string path) {
         if (isAbsolute(path))
             return path;