Do not do line conversions

I'm all for enforcing line ending canonicity, but unfortunately this was
done incorrectly. Specifically, "* text=auto" was added in
.gitattributes without also doing conversions. As the manpage for
gitattributes (man 5 gitattributes) explains in a note:

  When text=auto normalization is enabled in an existing repository, any
  text files containing CRLFs should be normalized. If they are not they
  will be normalized the next time someone tries to change them, causing
  unfortunate misattribution.

Therefore, whenever I touch a file, I replace it completely. Worse, it's
impossible to revert the file to a clean state without uncommenting the
line in .gitattributes.

Because I am unwilling to change all the text files to introduce
normalization, I'm instead changing .gitattributes.
Set icon and class for high dim nodes
Fix port prob in PostgresGeneExpressionDataService

PostgresGeneExpressionDataService was expecting the columns of the
result set to be in uppercase, while, if unqualified, PostgreSQL returns
the column names in lowercase.
Fix core-db integration in highDimensionData.js

Some calls to run queries were going to the proxy. This is an
unfortunate result of query running logic not being centralized.
Merge remote-tracking branch 'refs/remotes/github/core-integration' into ImperialBranch