Updated History docs for 3.5.0pr2

Allow scrollbars to work with non-px width scrollviews. Remove extra value from _pgOff array

Updated HISTORY.md files to have unified title headings. Some HISTORY.md files had incorrect title headings, so these changes fix the incorrect ones and unify their format: "[Component] Change History".

Changed scrollview-list to listen for render, instead of renderUI, and invoke syncUI once it's done applying it's classes. The call to render calls syncUI, and establishes a 'vert'/'horiz' class marker, which scrollview-list keys off of, to add padding etc. This changes the dimensions again, and hence the need to call syncUI again. Fixes #2531122 NOTE: Removed workaround from src/common/tests/manual/skins.html. Shouldn't be required after this fix is in.

Added disabled support, and manual tests. Need to move to unit. Fixes #2530062

Fixed scrollbar racing ahead of scroll position on FF 5+, with native transitions. Fixes #2530902

Fixed issue with translate impacting scroll dimension calculations on Chrome 9+, and now also Safari 5 - For real this time. Fixes #2530530. translateZ applied for hw accel, was preventing the 3.4.0 fix from working, and incorrect fallback for dimensions (added as a quick patch) was masking the incorrect scrollWidth calculations.

Fallback to using larger of bb.scrollWidth/Height or cb.scrollWidth/Height to account for FF (which clips cb.scrollWidth due to bb overflow:hidden) and Chrome (which clips bb.scrollWidth, when translated). Fixes #2530530 Tested examples and manual scrollview-chrome-transform.html on FF5, Chrome 12 (Win and MacOS), IE8 and Mobile Safari on the IPad.

Attempt to prevent incorrect scrollHeight calculations, due to post render syncUI call (see f10a402d) in IE8. Fixes #2530588

Cleaned up history verbage for ScrollView

ScrollView README -> README.md + HISTORY.md