Improve Column attributes for Data components

[mertsincan]

Removed Attributes;

• loadingBody It is not necessary after new virtualScrol implementation. The 'loadingTemplate' option of virtualScrollerOptions attribute can be used instead.

Renamed Attributes;

In order to be more understandable in line with the feedback from the users, the attributes names related to the cell editor have been made more specific.

• editorValidator -> cellEditValidator
• editorValidatorEvent -> cellEditValidatorEvent
• onBeforeEditorHide -> onBeforeCellEditHide
• onBeforeEditorShow -> onBeforeCellEditShow
• onEditorInit -> onCellEditInit
• onEditorSubmit -> onCellEditComplete
• onEditorCancel -> onCellEditCancel

New Attributes;

• dataType Depending on the dataType of the column, suitable match modes are displayed.
• showFilterMenu Whether to display the filter overlay.
• showFilterOperator When enabled, match all and match any operator selector is displayed.
• showClearButton Displays a button to clear the column filtering.
• showApplyButton Displays a button to apply the column filtering.
• showFilterMatchModes Whether to show the match modes selector.
• showFilterMenuOptions Whether to show the match modes selector and match operator selector.
• showAddButton When enabled, a button is displayed to add more rules.
• filterMatchModeOptions An array of label-value pairs to override the global match mode options.
• maxConstraints Maximum number of constraints for a column filter.
• filterMenuClassName Style class of the column filter overlay.
• filterMenuStyle Inline style of the column filter overlay.
• alignFrozen Position of a frozen column, valid values are left and right.
• hidden Whether the column is rendered.
• onFilterClear Callback to invoke when the filter meta is cleared.
• onFilterApplyClick Callback to invoke when the apply button is clicked.
• onFilterMatchModeChange Callback to invoke when the match mode option is changed.
• onFilterOperatorChange Callback to invoke when the filter operator option is changed.
• onFilterConstraintAdd Callback to invoke when a new constraint is added.
• onFilterConstraintRemove Callback to invoke when a constraint is removed.
• filterClear Template of clear element in menu.
• filterApply Template of apply element in menu.
• filterHeader Template of header element in menu.
• filterFooter Template of footer element in menu.