Use standard directories for client code

[labkey-tchad]

Rationale

Using non-standard code locations interferes with Gradle's ability to build efficiently (by skipping unnecessary build steps and by caching build results).

Related Pull Requests

• N/A

Changes

• Move client-side source code into standard src/client directory

[labkey-tchad]

@dnicolalde @csebranek If this looks good to you, I recommend applying the same change to your fork so that I can re-enable build caching on TeamCity and to avoidminimize future merge conflicts.
Note: The TeamCity failures aren't particular to this branch.

[csebranek]

@labkey-tchad changes look good to me. I also moved a few more client side files over related to the water monitoring config. And restored water monitoring config that was unintentionally removed in this merge.