more API cleanup on ICarbidePrefsModifier

added new exceptions page for stop mode and related images

spelling fixed and tcf page added

update API (remove extension point) for ICarbidePrefsModifier. Updated test.

better handling of failed connect

UI tweaks

add extension point for access 'abld build' arguments. Used to keep analyze tool extension happy while we start to deprecate abld support.

added TCF page and concepts link

replaced carbide portal with carbide.c++ portal

revised new cheatsheets contents

fix some minor issues

add basic function-level testing for macro retrieval from a carbide project.

update import wizard and operation

work to get EpocEngineHelper#getGlobalDefinesForConfiguration(ICarbideBuildConfiguration config, List<IPath> mmpFiles) working properly. Gets the configuration indexer data cache macros set up properly.

set the focus to layer control

Added ICarbideBuildConfigutation#getCompileTimeMacros() and EpocEngineHelper#getGlobalDefinesForConfiguration() as convenience wrappers for getting macros contributing to a carbide project. Removed ICarbideBuildConfiguration#hasSTDCPPSupport(). Refactored CarbideLanguageData to use simplified macro retrieval

fix npe, clear sbsv2 query cache data in memory when rebuilding sbsv2 cache from pref, other code clean-up

make bad epocroot value a const

initial commit of feature config import

consolidated register pages

removed two TOC entries

revised new how to cheat sheets

fix some potential issues with rss layer

merge commit