Add deprecation for old usages of cachable and readOnly in CPs

* Passing opts.cacheable to the constructor of ComputedProperty is deprecated
* Passing opts.readOnly to the constructor of ComputedProperty is deprecated
* Invoking `cacheable` in a computed property is preprecated.
* Invoking `readOnly` with aany params in a computed property is deprecated.
* Make InjectedProperty inherit `readOnly` from CPs prototype
[DOC beta] An attempt at additional TextSupport documentation, per #5065
Merge pull request #9489 from cibernox/deprecate_cacheable_method_in_cps

Add deprecation for old usages of cachable and readOnly in CPs
Merge pull request #9374 from tehcurtis/5065_better_document_component_actions

[DOC beta] First pass at additional TextSupport documentation, per #5065
[DOC beta] An attempt to update the Ember.run.bind docs per #9735