Major refactor

* Migrate to Python 3
* Update token generator mechanism
* Switch to Bootstrap 4
* Switch from Iconmonstr to Font Awesome icons
* Rename default CA common name to "Certidude at ca.example.lan"
* Add self-enroll for the TLS server certificates
* TLS client auth for lease updating
* Compile assets from npm packages to /var/lib/certidude/ca.example.lan/assets

.travis.yml

@@ -2,16 +2,16 @@ sudo: required
 language: python
 dist: trusty
 python:
-  - "2.7"
+  - "3.4"
 after_success:
   - codecov
 virtualenv:
   system_site_packages: true
 install:
   - sudo mkdir -p /etc/systemd/system # Until Travis is stuck with 14.04
-  - sudo pip install -r requirements.txt
-  - sudo pip install codecov pytest-cov requests-kerberos
-  - sudo pip install -e .
+  - sudo pip3 install -r requirements.txt
+  - sudo pip3 install codecov pytest-cov requests-kerberos
+  - sudo pip3 install -e .
 script:
   - sudo find /home/ -type d -exec chmod 755 {} \; # Allow certidude serve to read templates
   - sudo chmod 777 . # Allow forked processes to write .coverage files
@@ -27,4 +27,3 @@ addons:
   apt:
     packages:
     - software-properties-common
-    - python-configparser