JBIDE-14852 test failures in Seam (JavaEE)

Implemented wait for ClassPathMonitor.build() since different jobs call it.
JBIDE-14953 Add tests to Palette wizards

Moved html generation classes to IElementGenerator.
JBIDE-14970 Bump parent pom version used in root pom to Beta3
JBIDE-14606 Struts Tiles File

Cleared from tiles references to struts.
JBIDE-14924 JQuery Mobile Palette filter is active after page is reopened
JBIDE-14972 Use preferences in code snippets from Palette wizards.

Test is added.
JBIDE-13636  references in jsf tooling to struts

Most references in jst are removed.
JBIDE-15040 Bump parent pom version used in root pom to 4.1.0.CR1
JBIDE-15017 CSS Editor dialog and CSS preview do not work on Windows 64

- Moved to SWT.NONE instead of SWT.MOZILLA
- Wrapped <div> by <body> in preview. So the text can be at least alligned horizontally now