Preparations for Bob v4 release

* Remove all outdated files
* Port to new CI (closes #25, closes #44)
* Activate caching (closes #43)

.gitlab-ci.yml

+# Definition of global variables (all stages)
+variables:
+  CONDA_ROOT: "${CI_PROJECT_DIR}/miniconda"
+
+# Definition of our build pipeline order
 stages:
   - build
+  - deploy
 
-variables:
-    CONDA_ENVS_PATH: "conda-env"
-    CONDA_BLD_PATH: "conda-env"
-    CHANNEL_URL: "http://www.idiap.ch/software/bob/conda/label/main"
-    UPLOAD_URL: "http://www.idiap.ch/public-upload/conda/label/main"
-    CONDA_NPY: "112"
-    PYTHONUNBUFFERED: "1"
 
+# Build targets
 .build_template: &build_job
   stage: build
   before_script:
-    - export PATH=/usr/local/bin:$PATH
-    - source /opt/miniconda/bin/activate
+    - mkdir _ci
+    - curl --silent "https://gitlab.idiap.ch/bob/bob.admin/raw/master/gitlab/install.sh" > _ci/install.sh
+    - chmod 755 _ci/install.sh
+    - ./_ci/install.sh _ci master #installs ci support scripts
+    - ./_ci/before_build.sh
   script:
-    - echo "default_channels:" > $HOME/.condarc
-    - echo "  - https://repo.continuum.io/pkgs/main" >> $HOME/.condarc
-    - echo "  - https://repo.continuum.io/pkgs/free" >> $HOME/.condarc
-    - echo "  - https://repo.continuum.io/pkgs/r" >> $HOME/.condarc
-    - echo "  - https://repo.continuum.io/pkgs/pro" >> $HOME/.condarc
-    - conda config --set add_pip_as_python_dependency false
-    - conda config --set always_yes true
-    - conda config --set show_channel_urls true
-    - conda config --set anaconda_upload no
-    - conda config --add channels ${CHANNEL_URL}
-    - conda config --set ssl_verify false
-    - conda install --quiet --yes -c defaults python conda=4.4 curl conda-build=3
-    - source /opt/miniconda/etc/profile.d/conda.sh
-    - conda activate base
-    - conda clean --lock
-    - conda info
-    - scripts/build.py order_of_build.txt conda_build_config.yaml
-  cache:
+    - scripts/build.py _ci/conda_build_config.yaml
+  after_script:
+    - ./_ci/after_build.sh
+  cache: &build_caches
     key: "$CI_BUILD_NAME"
     paths:
-      - conda-env/.pkgs/*.tar.bz2
-      - conda-env/.pkgs/urls.txt
-      - conda-env/src_cache
+      - miniconda.sh
+      - ${CONDA_ROOT}/pkgs/*.tar.bz2
+      - ${CONDA_ROOT}/pkgs/urls.txt
+      - ${CONDA_ROOT}/src_cache
+
 
-build-linux-64:
+build_linux:
   <<: *build_job
-  image: continuumio/conda-concourse-ci
-  after_script:
-    - ./scripts/upload-packages.sh linux-64
-    - ./scripts/upload-packages.sh noarch
   tags:
     - docker
+  image: continuumio/conda-concourse-ci
+  artifacts:
+    expire_in: 1 week
+    paths:
+      - _ci/
+      - ${CONDA_ROOT}/conda-bld/linux-64/*.tar.bz2
 
-build-osx-64:
+
+build_macosx:
   <<: *build_job
-  after_script:
-    - ./scripts/upload-packages.sh osx-64
   tags:
-    - conda-macosx
+    - macosx
+  artifacts:
+    expire_in: 1 week
+    paths:
+      - _ci/
+      - ${CONDA_ROOT}/conda-bld/osx-64/*.tar.bz2
+
+
+# Deploy built packages
+deploy:
+  stage: deploy
+  before_script:
+    - ./_ci/install.sh _ci master #updates ci support scripts
+  script:
+    - ./scripts/deploy.sh
+  dependencies:
+    - build_linux
+    - build_macosx
+  tags:
+    - deployer
+  environment: stable
+  only:
+    - master

README.md

-# Conda recipes for the bob channel
+# Conda recipes for bob dependencies not available in the defaults channel
 
 This package contains scripts and recipes for building dependencies packages of
 Bob for Conda.
 
+
 ## Folder structure
 
-There are several folder inside this repository and they are organized like
-this:
+There are two folders inside this repository and they are organized like this:
+
+- `conda`: A folder to keep the recipes for packages.
+- `scripts`: Contains some useful scripts.
 
-- `dependencies` A folder to keep the recipes for packages.
-- `scripts` Contains some useful scripts.
 
 ## Adding a new package