Merge branch 'dev' into dev-add-russian

* dev:
  Add translation files for all categories
  Move the generic helpfiles into categories: generic, object, bots and cbot
  Add translation files for all levels
  Move help files to level-specific directories
  Correct the Polish files capitalisation to be uniform across languages
  Move level scenes to level-specific directories
  Add the help/ and levels/ CMake machinery to enable the po-based translations
  Add CMake-Po4a-based infrastructure to allow po-based translation of Colobot help- and scene-description (level) files

Conflicts:
	levels/gen_levels_xml.sh

CMakeLists.txt

@@ -10,7 +10,6 @@ endif()
 
 install(DIRECTORY ai         DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
 install(DIRECTORY fonts      DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
-install(DIRECTORY help       DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
 install(DIRECTORY icons      DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
 install(DIRECTORY models     DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
 #install(DIRECTORY models-new DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
@@ -18,4 +17,5 @@ install(DIRECTORY music      DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
 install(DIRECTORY sounds     DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
 install(DIRECTORY textures   DESTINATION ${COLOBOT_INSTALL_DATA_DIR})
 
+add_subdirectory(help)
 add_subdirectory(levels)

help/CMakeLists.txt

@@ -0,0 +1,33 @@
+cmake_minimum_required(VERSION 2.8)
+
+set(LEVELS_I18N_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../levels-i18n/)
+
+# Handle all help categories' translations
+foreach(LEVEL_CODENAME cbot;object)
+    set(SCENEFILE)
+    set(SCENEDEST)
+    set(PODIR     "${LEVEL_CODENAME}/po/")
+    set(HELPDIR   "${LEVEL_CODENAME}/")
+    set(HELPDEST  "${LEVEL_CODENAME}")
+    message(STATUS "Managing translations for '${LEVEL_CODENAME}' help category")
+    include(${LEVELS_I18N_PATH}/CMakeLists.txt)
+endforeach()
+
+set(LEVEL_CODENAME generic)
+set(SCENEFILE)
+set(SCENEDEST)
+set(PODIR     "${LEVEL_CODENAME}/po/")
+set(HELPDIR   "${LEVEL_CODENAME}/")
+set(HELPDEST  "")
+message(STATUS "Managing translations for '${LEVEL_CODENAME}' help category")
+include(${LEVELS_I18N_PATH}/CMakeLists.txt)
+
+set(LEVEL_CODENAME bots)
+set(SCENEFILE)
+set(SCENEDEST)
+set(PODIR     "${LEVEL_CODENAME}/po/")
+set(HELPDIR   "${LEVEL_CODENAME}/")
+set(HELPDEST  "object/")
+message(STATUS "Managing translations for '${LEVEL_CODENAME}' help category")
+include(${LEVELS_I18N_PATH}/CMakeLists.txt)
+