Revamp editable widget initialization and auto detection of input

[kartik-v]

Enhancments and Changes that may mildly break BC .

• The editable widget will now be initialized on the editable container Editable::$containerOptions['id'] and NOT via the editable input
• A new boolean property autoGuessInput is added. The options for the input will be auto detected for all HTML inputs, Krajee Input widgets and DateControl - if autoGuessInput is set to true. If you use a custom widget that does not have options in one of the above -- then you can set autoGuessInput to false and necessarily add the CSS class kv-editable-input to your base input - so that the editable plugin can detect the input correctly.

The above changes will ensure consistency in editable maintenance - parsing the editable values and displayValueConfig correctly, and also consistency in usage of kartik\grid\EditableColumn.