Code selection shouldn't get line numbers
In the repository page, when a source code is selected (e.g. to copy it) the line numbers shouldn't be included in the selection as copying the code and pasting it somewhere else results in pasting line numbers too (still loosing the code indentation...).
Redmine shows the code in a table and with firefox is possible to select a columns with Ctrl+mouse, but it's a FF trick, other browsers doesn't support it. A general solution should be implemented.