* TaskBuildIndex starts seperate indexer processes and communicates via shared memory
* indexer processes get restarted if they fail
* indexer processes are killed when the app closes or crashes
* added utility class SharedMemory to allocate and access shared memory, providing basic data structures
* added SharedMemoryGarbageCollector for keeping track of running instances and cleaning up shared memory in case of a crash
* show errors for source files that crashed during indexing
* added basic exception handling to task scheduling
* added option to turn off processes and use threads in preferences, but still use shared memory
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* moved sample projects from data to user folder
* added fallback files for app and window settings
* implemented copying app and window settings to user folder when not found on app startup
* fixed upgrading for windows installer
* polished color schemes for error view
* fixed error id column not hidden
* fixed error count shown correctly in each view
* moved storage stats logging to application
* fixed indexed flag of errors broken for indexed headers in cdb project
* fixed scrolling to active error when errors where not visible before
* reverted tictactoe files to no errors
Eberhard Graether