[326449] parser error on regular expression containing sequence

Signed-off-by: Jason Peterson <jasonpet@us.ibm.com>
Bug 416069 - TVT/DVT4.3:TCT95: DVT_PLK: Empty sections
Bug 419260 - Pom version updates jsdt.core and jsdt.tests

Signed-off-by: Thanh Ha <thanh.ha@eclipse.org>
[417465] - JavaScript Validation reports max 100 problems per .js file
[404832] - JavaScript error on valid regex
[420333] Remove JSDT semantic validation.
Revert "[420333] Remove JSDT semantic validation."

This reverts commit e9eca50d914fd1a94fa9f9235dd3597a74b2547d.
[420333] Remove JSDT semantic validation.
Revert "[420333] Remove JSDT semantic validation."

This reverts commit 9ebc2493e56fa44c2f1f8c60d9e5969aa36934ef.