Interpunction corr.

I've added a comma in line 47 and 48 due to grammatical reasons ("um-zu"-constructions require a comma)
Style corr.

l. 24: I've inserted an indefinite article and the relative pronoun due to stylistic reasons (to let it sound "more natural".
l. 40: I've inserted the anaphoric relation relation between the subject of the first part of the sentence and the latter (message - it.
Moreover, I've changed the verb and the adverb due to syntax and context. 
l. 46: I've changed the capitalization.
Fixed message quotes
Merge branch 'master' of github.com:WoltLab/com.woltlab.wcf.message
Added missing language variables
Merge branch 'master' of github.com:WoltLab/com.woltlab.wcf.message
Updating minified JavaScript files
Related quotes are now automatically inserted if quick reply is empty
Merge branch 'master' of github.com:WoltLab/com.woltlab.wcf.message
Fixed reference error
Updating minified JavaScript files
Merge branch 'master' of github.com:WoltLab/com.woltlab.wcf.message
Quote-Manager is now longer a valid quote container
Updating minified JavaScript files
Ignoring errors if remote host is unreachable
Merge branch 'master' of github.com:WoltLab/com.woltlab.wcf.message
Updating minified JavaScript files
Forcing message options to be hidden while editing
Updating minified JavaScript files
Language fixes by @Gabbid