New: i18n pluralization and variables support and more...

fixes: #1649, #1648, #1641, #1650

relative to: #1597

_examples/i18n/template/locales/el-GR/other.ini

@@ -0,0 +1,10 @@
+[nav]
+User = Λογαριασμός
+
+[debug]
+Title = Μενού προγραμματιστή
+AccessLog = Πρόσβαση στο αρχείο καταγραφής
+AccessLogClear = Καθαρισμός {{tr "debug.AccessLog"}}
+
+[user.connections]
+Title = {{tr "nav.User"}} Συνδέσεις

_examples/i18n/template/locales/el-GR/user.ini

@@ -0,0 +1,5 @@
+[forms]
+member = μέλος
+register = Γίνε {{tr "forms.member" }}
+registered = εγγεγραμμένοι
+registered_members = Υπάρχουν {{ concat (plural (tr "forms.member") .count) (tr "forms.registered") }}

_examples/i18n/template/locales/el-GR/welcome.yml

@@ -0,0 +1 @@
+HiDogs: Hi %d {{plural (tr "Dog") .count }}

_examples/i18n/template/locales/en-US/other.ini

@@ -0,0 +1,12 @@
+# just an example of some more nested keys,
+# see /other endpoint.
+[nav]
+User = Account
+
+[debug]
+Title = Developer Menu
+AccessLog = Access Log
+AccessLogClear = Clear {{tr "debug.AccessLog"}}
+
+[user.connections]
+Title = {{tr "nav.User"}} Connections

_examples/i18n/template/locales/en-US/user.ini

@@ -0,0 +1,5 @@
+[forms]
+member = member
+register = Become a {{tr "forms.member" }}
+registered = registered
+registered_members = There are {{ concat (plural (tr "forms.member") .count) (tr "forms.registered") }}

_examples/i18n/template/locales/en-US/welcome.yml

@@ -0,0 +1,2 @@
+Dog: "dog"
+HiDogs: Hi %d {{plural (tr "Dog") .count }}