Added french language (from English copy).

    For now, it's just a copy of the english.txt file.
Added object_scenario_load_custom_text function
Added comments capability to language.txt. Now reads string number
Removed warnings. Only reads 4 characters for string id
add ability to change language
Merge branch 'load_custom_text' of https://github.com/duncanspumpkin/OpenRCT2 into duncanspumpkin-load_custom_text

Conflicts:
	src/string_ids.c
Merge branch 'duncanspumpkin-load_custom_text'
Merge pull request #283 from fbourigault/feature-language-french

Add french language
add french language
Update dutch.txt, also fixes #287 for Dutch

Also contains a few additional strings and fixes typos.
Added new OpenRCT2 strings for language switching
Extra translated strings, some fixed typos
Add new language files to vs project
Added missing inline sprites
Merge pull request #297 from duncanspumpkin/language_cleanup

Language cleanup
Trying to solve gfx issues
Fixed Zoom bug. No longer uses undefined behaviour.
Merge pull request #298 from duncanspumpkin/gfx_play

Gfx play
Merge branch 'master' of https://github.com/Gymnasiast/OpenRCT2 into Gymnasiast-master

Conflicts:
	data/language/dutch.txt
Merge branch 'Gymnasiast-master'