Refactor CI config and scripts to avoid duplicated code

.travis.yml

@@ -18,9 +18,10 @@ install:
   - ci/install.sh
 
 script:
-  - set -e
-  - make multidocs
+  - ci/build.sh
   - make linkcheck
+
+after_success:
   - if [[ "${TRAVIS_BRANCH}" == "master" ]]; then
       doctr deploy develop --built-docs doc/_build/html;
     fi

ci/build.sh

@@ -1,7 +1,3 @@
 #!/bin/bash -ex
 
-pip3 install -U pip
-pip3 install sphinx doctr sphinx-panels sphinx-multiversion
-# You can change the command above to use a different version of the theme (but return it to the correct one before merging)
-pip3 install git+https://github.com/dalthviz/spyder-docs-sphinx-theme.git@sidebar_widgets
 make multidocs

ci/install.sh

@@ -2,4 +2,5 @@
 
 pip3 install -U pip
 pip3 install sphinx doctr sphinx-panels sphinx-multiversion
-pip3 install git+https://github.com/spyder-ide/spyder-docs-sphinx-theme.git@develop_spyder
+# You can change the command above to use a different version of the theme (but return it to the correct one before merging)
+pip3 install git+https://github.com/dalthviz/spyder-docs-sphinx-theme.git@sidebar_widgets