Wrapped unsafe TemplateStructuredTextViewerConfiguration.scalaConfiguration in option.

This prevents possible null pointer exceptions in other SSE component who create instances of this class, such as the Maven POM Editor.

Fixes #176
Sets version to 0.4.3
Remove usages of ScalaCodeScanner.tokenize(d:Idocument, ...)

Fixes #170
Merge pull request #188 from huitseeker/issue/rid-of-tokenize-in-templateregionparser-170

Remove usages of ScalaCodeScanner.tokenize(d:Idocument, ...)
Removed ScalaTemplateParser dependencies on scala-ide, ScalaTempalateCompiler

ScalaTemplateParser depended on:
* The TemplateTree classes in ScalaTempalteCompiler ==> These have been refactored to a separate file.
* HasLogger ==> Logging has simply been removed

These changes are in preparation for when ScalaTemplateParser is split off into it's own project.
Default build to done against latest milestone
Merge pull request #200 from skyluc/template-parser-split

Template parser split
Merge pull request #199 from skyluc/next-version

Sets version to 0.4.3
Merge pull request #179 from jhaberstro/maven-pom-editor-nullptr-#176

Wrapped unsafe TemplateStructuredTextViewerConfiguration.scalaConfiguration in Option.
Puts the Java method search outside the askOption

Searching for a Java method may trigger some AskLoadedType in the
presentation compiler, so it cannot be done while inside its thread.
Merge pull request #203 from skyluc/issue/reentrant-askloadedtype-202

Ugly fix for hyperlinking to Java from routes editor