Translations and i18n (#60)

* Managing i18n

* Fix absolute path

* Config files

* Home link manage langage

* Fixing footer i18n

* Implemented i18n on newsletter

* Implemented two languages in example

* Removed old section directory

* Using yaml in data to organize home summary

* Fully working for old versions without i18n

* Integrating language menu CSS

* Fix language dropdown CSS

* Refactor translation codes

* Remove duplicate code

* Fix URL issues

* Move customMenus and other site related config into data section

* Fix error during language toggle

* Only show the available translation for the posts

* Handle navbar brand URL properly

* Fix responsiveness

Co-authored-by: Hugo MARTIN <hugo.martin.69@gmail.com>
Co-authored-by: hossainemruz <emruz@appscode.com>

exampleSite/data/en/sections/skills.yaml

@@ -0,0 +1,48 @@
+# section information
+section:
+  name: Skills
+  enable: true
+  weight: 2
+  showOnNavbar: true
+  # Can optionally hide the title in sections
+  # hideTitle: true
+
+# Your Skills.
+# Give a summary of you each skill in the summary section.
+skills:
+- name: Kubernetes
+  icon: "images/skills/kubernetes.png"
+  summary: "Capable of deploying, managing application on Kubernetes. Experienced in writing Kubernetes controllers for CRDs."
+  url: "https://kubernetes.io/"
+
+- name: Go Development
+  icon: "images/skills/go.png"
+  summary: "Using as the main language for professional development. Capable of writing scalable, testable, and maintainable program."
+  url: "https://golang.org/"
+
+- name: Cloud Computing
+  icon: "images/skills/cloud.png"
+  summary: "Worked with most of the major clouds such as GCP, AWS, Azure etc."
+
+- name: Docker
+  icon: "images/skills/docker.svg"
+  summary: "Write most of the programs as dockerized container. Experienced with multi-stage, multi-arch build process."
+  url: "https://www.docker.com/"
+
+- name: Prometheus
+  icon: "images/skills/prometheus.png"
+  summary: "Capable of setup, configure Prometheus metrics. Experienced with PromQL, AlertManager. Also, experienced with writing metric exporters."
+  url: "https://prometheus.io/"
+
+- name: Linux
+  icon: "images/skills/linux.png"
+  summary: "Using as the main operating system. Capable of writing bash/shell scripts."
+
+- name: Git
+  icon: "images/skills/git.png"
+  summary: "Experienced with git-based development. Mostly, use Github. Also, have experience in working with GitLab."
+  url: "https://git-scm.com/"
+
+- name: C++
+  icon: "images/skills/c++.png"
+  summary: "Know basic C/C++ programming. Used for contest programming and problem solving."