Blender Git Loki

VSE UI: Text panel adjustments

This patch adjusts a number of text panel elements:

- The text entry widget has become larger in order to distinguish it from the strip name.
- Wrap has been moved up under the text, since this doesn't relate to bounding box.
- Alignment X/Y has been renamed to Anchor X/Y, since this is the achor point of the text point, and not the Alignment of the text.
- Offset and Crop was completely missing from the Text strip panel, these has been added.

Reviewed By: billreynish

Differential Revision: https://developer.blender.org/D7869