Changes order in Dockerfile, only for tidiness, as the order in the end wasn't relevant.
Fixes typos (underscores) which where preventing the correct processing of two files.
Adds "integrated_tool_panel.xml" to the set of files to be copied/linked, as otherwise new tools are not visible in the panel after shutting down the container that installed the tools.
Merge pull request #5 from pcm32/master

Typos corrections in the export_user_files.py and minor change in Dockerfile