Create index-pl.html
add dutch translation
address the comments made by @ajdevries
addressed @angelos comments
addressed @angelos comments

about the organisers
addressed @angelos comments

concerning harassing/harassment  
Merge pull request #19 from dvberkel/master

Dutch translation
Update index-de.html

Some tweaks to the German translation:

* "don't be a jerk" was translated as "be an adult", now: "behave like an adult"
* "body size" was translated as "body height", but I believe what is meant is how skinny or not a person is? If so, now I translated it as "body shape"
* fixed a few grammar glitches and typos.
Merge pull request #20 from fwenzel/patch-1

Update index-de.html
Added dutch to translations
French translation
Fix a typo found by Julien Rouhaud
Merge pull request #21 from gleu/frenchtranslation

French translation
[FEAT] hebrew
Changed titles cases; Fixed one typo; Removed trailing whitespaces;
Merge pull request #17 from kamilogorek/master

Polish translation
Changed translations order to alphabetical; Added polish translation;

After merging all other translations, I think it'll be easier to quickly look through all of them when they'll be in alphabetical order then just randomly stacked one under the other.
Merge pull request #24 from kamilogorek/patch-1

Changed translations order to alphabetical; Added polish translation;
Add index-ja.html as a Japanese version

* Add Japanese version based on <https://gist.github.com/jj1bdx/5150642>
Update index-ja.html

* More consistent wording