Update minetest.po

Fixed misspelled words (still incomplete). New translated strings have been added.
fix build
fix: server-side culling
Merge remote-tracking branch 'upstream/master' into octree
Fix background of creative icon (was black, now transparent)
Noise: Don't assume Noise is used for 2D unless gradientMap2D is actually called
fix: adjust settings tab element positions
fix: adjust texture pack tab element positions
fix: adjust mods`tab element positions
chg: replace credits with the link to github

There are several reasons for this change:
  - it's hugely outdated
  - no one ever updated this tab
  - is anyone actually interested in the full list?
Merge pull request #172 from AlfredoRamos/patch-1

Update minetest.po (Spanish)
fix: adjust create server tab element positions
Merge pull request #173 from donat-b/menu

Menu fixes
Fix typo in lua_api.txt
Fixes #1687 by extra semaphore retval handle code for OSX

See https://github.com/minetest/minetest/issues/1687#issuecomment-56830173

Signed-off-by: Craig Robbins <kde.psych@gmail.com>
Update Spanish language.

Signed-off-by: Craig Robbins <kde.psych@gmail.com>
merge win build doc
Update French translation

Signed-off-by: Craig Robbins <kde.psych@gmail.com>
doc: make jobs
Merge pull request #174 from donat-b/readme

Update readme