[INTERNAL] sap.ui.core.OPA5 - improved api documentation

- switched to parameters
- documented errormessage

Change-Id: I893d670509fe05062795e2c8e250660d2f8f2e18
[FEATURE] Table: Keyboard Handling

- Fixed problem with Focus after CTRL + A on IE.

Change-Id: Idc021b3999b4de4bbaa84b2bec228e0da7cc631c
[FEATURE] Table: Keyboard Handling

- Enabled toggling of Group Header on ALT+UP/DOWN.

Change-Id: Ib3c349f8cba8537f332edf95b5b880469705b8dd
[FEATURE] Table: Keyboard Handling

- Fixed problem with SHIFT + UP/DOWN on "Row Only" selection mode.

Change-Id: I65bdc0fffba3a73e2a59d15a8ddc8421e238909b
Merge "[FEATURE] Table: Keyboard Handling"
Merge "[FEATURE] Table: Keyboard Handling"
Merge "[FEATURE] Table: Keyboard Handling"
Merge "[INTERNAL] sap.ui.core.OPA5 - improved api documentation"