rule file name length

[noraj]

rule file name length is limited to 20 chars

so it's not possible to keep the original file name OneRuleToRuleThemAll.rule

On Linux the maximum length for a file name is 255 bytes. So why not use that?

[noraj]

Same for hashlist import or task name

[tdaudi]

I extend this to 50, but did not check if the size can cause any display problem. I'll let this issue open if any bugs occurs