0024389: Invalid hilight of AIS dimension line in local selection

0024389: Invalid hilight of AIS dimension line in local selection

- Fixed invalid presentation of dimension highlight.
- Fixed bug on switching between selection modes. Individual sensitive entities generated for each selection mode.
- Revised selection: AIS_DimensionSelectionMode enumeration added, redundant AIS_DimensionDisplayMode is removed.
- Revised entity owner usage: used standard SelectMgr_EntityOwner for neutral selection, AIS_DimensionOwner for "line", "text" selection modes.
- Made arrows selectable.
- Got rid of predefined arrow angle. The arrow angle is now taken from dimension aspect.
- The 3D text is now centered by bounding box for better alignment.