travis: generate coverage and docs from SETUP == full

Travis job 1 is the one corresponding to SETUP == minimal and job 2
corresponds to SETUP == full.In the past we used job 1 to generate docs
and coverage. However, the minimal install is allowed to skip tests and
this will decrease coverage. By generating coverage from the full run
we should get better coverage.

(For consistency, I also switched devdoc generation to job 2.)

.travis.yml

@@ -66,7 +66,7 @@ script:
   - |
      test ${TRAVIS_PULL_REQUEST} == "false" && \
      test ${TRAVIS_BRANCH} == ${GH_DOC_BRANCH} && \
-     test "${TRAVIS_BUILD_NUMBER}.1" == "${TRAVIS_JOB_NUMBER}" && \
+     test "${TRAVIS_BUILD_NUMBER}.2" == "${TRAVIS_JOB_NUMBER}" && \
      (cd ./package && python setup.py build_ext --inplace) && \
      (cd ./package/doc/sphinx && make clean html) || \
      true
@@ -75,5 +75,5 @@ after_success:
   - |
      test ${TRAVIS_PULL_REQUEST} == "false" && \
      test ${TRAVIS_BRANCH} == ${GH_DOC_BRANCH} && \
-     test "${TRAVIS_BUILD_NUMBER}.1" == "${TRAVIS_JOB_NUMBER}" && \
+     test "${TRAVIS_BUILD_NUMBER}.2" == "${TRAVIS_JOB_NUMBER}" && \
      bash ./maintainer/deploy_docs.sh