Merged PR 179: Fix bugs about flex and context menu (see desc) + disable hard rigid behavior + add missing properties to form + Clean up css

- Clean up some css class
- Fix wrong order when applying flex
- Fix Replace behavior not working because previous container was still existing
- Disable hard rigid behavior which disallow two container to overlap
- Add ENABLE_FLEX, ENABLE_HARD_RIGID ENABLE_SWAP
- Add missing form properties with dimensions
- Update readme

src/utils/default.ts

@@ -9,6 +9,19 @@ import { ISymbolModel } from '../Interfaces/ISymbolModel';
 
 /// CONTAINER DEFAULTS ///
 
+/** Enable the swap behavior */
+export const ENABLE_SWAP = false;
+
+/** Enable the rigid behavior */
+export const ENABLE_RIGID = true;
+
+/**
+ * Enable the hard rigid behavior
+ * disallowing the container to overlap (ENABLE_RIGID must be true)
+ */
+export const ENABLE_HARD_RIGID = false;
+
+/** Enalbe the text in the containers */
 export const SHOW_TEXT = false;
 export const SHOW_SELECTOR_TEXT = true;
 export const DEFAULTCHILDTYPE_ALLOW_CYCLIC = false;