fix: sanitize data for xss

[guncebektas]

this is a possible fix for #331
I'm using this on production without a problem.

[guncebektas]

hi @jankapunkt can you please review the PR? It's a security patch so any suggestion will be great.

[jankapunkt]

Hey @guncebektas this is not forgotten, we just discovered during #448 that there is a branch diversion between master and devel (master is 8 commits ahead and 3 commits behind at the same time). Once we figure this out we can merge this into whatever the most recent branch will be (I think devel).

This will also go into an RC release so everybody can safely test on their setups.

[ricaragao]

@jankapunkt , did you have time to fix the conflicts? I'd like to prepare this package to support Meteor 3, but I prefer wait for this merge before. What do you think?

[guncebektas]

Hi @jankapunkt, is there anything I can do to complete this pr? Will u include this into 3.0 merge

[jankapunkt]

Hi @guncebektas I changes the branch to migration/3.0. If you can fix the merge conflicts and @lynchem and @ricaragao take a look at it afterwards it should be good to go from my end.