ISSUE #5: Source path should be retrieved from project and there should be combo instead of text field.
Note for later about refactoring PackageHelper.
ISSUE #6: When plugin is about to override existing file content user should be informed.
Adding MissingSourcePathDialog.
Saving settings in project context.
Adding ApplicationConfigurable with children.

Conflicts:
	META-INF/plugin.xml
Work in progress on TemplateConfigurable.
Adding TemplateSettings.
Adding MainConfigurable as Application Configurable.
Implementation of TemplateConfigurable to display Activity template.
Templates for all the Generation Types.
Templates are applyable to code generation.
Restoring default templates working.
Refactoring in LayoutAction, TemplateConfigurableand DialogsFactory.