[mod] directory structure

tools/makefile

@@ -125,11 +125,11 @@ logic: ${dir_build}/logic.js
 
 ${dir_temp}/logic-unlinked.js: \
 		${dir_lib}/plankton/plankton.d.ts \
-		${dir_source}/logic/helpers.ts \
+		${dir_source}/base/helpers.ts \
-		${dir_source}/logic/widget.ts \
+		${dir_source}/base/widget.ts \
-		${dir_source}/logic/conf.ts \
+		${dir_source}/base/types.ts \
-		${dir_source}/logic/types.ts \
+		${dir_source}/resources/conf.ts \
-		${dir_source}/logic/backend.ts \
+		${dir_source}/resources/backend.ts \
 		${dir_source}/widgets/sources/logic.ts \
 		${dir_source}/widgets/listview/logic.ts \
 		${dir_source}/widgets/weekview/logic.ts \
@@ -142,7 +142,7 @@ ${dir_temp}/logic-unlinked.js: \
 		${dir_source}/pages/event_add/logic.ts \
 		${dir_source}/pages/event_edit/logic.ts \
 		${dir_source}/pages/overview/logic.ts \
-		${dir_source}/logic/main.ts
+		${dir_source}/main.ts
 	@ ${cmd_log} "logic | compile …"
 	@ ${cmd_mkdir} $(dir $@)
 	@ ${cmd_tsc} --lib dom,es2020 $^ --outFile $@ # --strict