Update TX config according to transifex new rules

Update TX config according to transifex new rules

.tx/config

@@ -1,7 +1,7 @@
 [main]
-host = https://www.transifex.com
+host = https://app.transifex.com
 
-[QGEP.qgep-project]
+[o:qgep:p:qgep-plugin:r:qgep-project]
 source_file = i18n/qgep-project.ts
 file_filter = i18n/qgep-project_<lang>.ts
 source_lang = en
@@ -10,7 +10,7 @@ trans.fr = i18n/qgep-project_fr.ts
 trans.it = i18n/qgep-project_it.ts
 type = QT
 
-[QGEP.qgep-plugin]
+[o:qgep:p:qgep-plugin:r:qgep-plugin]
 source_file = i18n/qgepplugin_en.ts
 file_filter = i18n/qgepplugin_<lang>.ts
 source_lang = en
@@ -19,7 +19,7 @@ trans.fr = i18n/qgepplugin_fr.ts
 trans.it = i18n/qgepplugin_it.ts
 type = QT
 
-[QGEP.qgepplugin-js]
+[o:qgep:p:qgep-plugin:r:qgepplugin-js]
 source_file = i18n/qgepplugin-js_en.ts
 file_filter = i18n/qgepplugin-js_<lang>.ts
 source_lang = en