Revert "Deal with text position alignment separately from text position."

This reverts commit 2e4f29bc04afe99a376f03f18887371703f85027.
Revert "Fix up the text position alignment logic for bidi text."

This reverts commit aa6ea9b2870d40d3f4dd668309597354f48e8c68.
Revert "Fix up browser VTTCue API with new cue setting alignment values for the cue box (line and text position)."

This reverts commit 1fdced7d6792f30d18a33b8ed62bea7283490e93.
Revert "Finish the parsing part for the text position/align cue setting."

This reverts commit 0df7e04ebfb80528598bb5b643e8519610304727.
Revert "Fix up parsing of line setting."

This reverts commit 027c587cc54882e7119af89006de03f182823a5e.
Revert "Set default values for cue settings in parsing."

This reverts commit f98fddacaba6f66053bc14d560a99a4c518785ae.
Revert "Specify text position alignment syntax."

This reverts commit d4db04ae0aa6c23433be290b2bdb677b989d575f.
Revert "Specify syntax for "WebVTT line position cue setting"."

This reverts commit fd94ba5c29fe4951ced71a528212eab62ecc5f43.

Conflicts:
	webvtt.html
Revert "Oops, fix the example to actually use the correct align values."

This reverts commit 88b96553e274c542accad98f5943cabf16b00908.

Conflicts:
	Overview.html
Revert "Started redesigning the box positioning mechanism."

This reverts commit 86ba250eaf7d2e53f614d684755ef13d089c7652.

Conflicts:
	Overview.html
Revert "Remove surplus "computed text position anchor point"."

This reverts commit 8d5fe32cde8a99f5ae76545c5154fd8cca2975b7.

Conflicts:
	Overview.html
Revert "Make "text position" actually define the position of the cue box as"

This reverts commit 797554b08f06cedae9e5568b3a91795492d9d395.

Conflicts:
	Overview.html
Revert "Adding overflow:hidden to cue background box."

This reverts commit be09934775d380753873ab9667c70e1b3af43aa3.
Revert "Update the rendering section to support the positioning mechanism proposed"

This reverts commit 3d05e2e05c72b01404cf290bf07c7f0f367827a7.

Conflicts:
	webvtt.html
Revert "Started making changes for redesigning the positioning mechanism:"

This reverts commit 6b7c8613d219890f170a67c1099ca1468702d716.
Restore typo fix
Restore whitespace changes
Restore line wrapping changes
Restore the "cue" in "Parse the WebVTT cue settings"
Restore hidden comments for cue settings