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>

layouts/partials/navigators/floating-lang-selector.html

@@ -0,0 +1,19 @@
+{{ $pageURL:= .RelPermalink }}
+{{ if .Site.IsMultiLingual }}
+    {{ $pageURL = strings.TrimPrefix (path.Join "/" .Language.Lang) $pageURL }}
+{{ end }}
+
+<div class="dropdown languageSelector">
+    <a class="btn dropdown-toggle" href="#" id="languageSelector" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <img class="flag" src="https://www.countryflags.io/{{ partial "helpers/country-code.html" .Language }}/flat/16.png">
+        {{ .Site.Language.LanguageName }}
+    </a>
+    <div class="dropdown-menu" aria-labelledby="languageSelector">
+        {{ range .Translations }}
+        <a class="dropdown-item nav-link languages-item" href="{{ path.Join "/" (cond (eq .Language.Lang "en") "" .Language.Lang) $pageURL }}">
+            <img class="flag" src="https://www.countryflags.io/{{ partial "helpers/country-code.html" .Language }}/flat/24.png">
+            {{ .Language.LanguageName }}
+        </a>
+        {{ end }}
+    </div>
+</div>