Fixes in "printers@cinnamon.org"

[hans-fritz-pommes]

I encountered several small issues with the printers applet.
I modified the applet.js in /usr/share/cinnamon/applets/printers@cinnamon.org and tested printing documents.
The things I did correct:

• The "Cancel all jobs" command didn't work for an user who had no permisisons to run cancel -a for a specific printer, even if all of the jobs on this printer belonged to him.
  -> Now the "Cancel all jobs" command tries to cancel every single job, not cancel -a for every printer
• The appearance of the listed jobs was really bad: e.g. when you had more than one job, the description for every job was "<desc. first job><desc. second job><desc..." and so on.
• The job description consisted of: (job number) lpstat -o (lpstat several times, if there was more than one job - see point before)
  -> The description is now: (job number) 'document_name' on <printer_name> (<size in Bytes/MB/KB>) by <user> (using lpq -a).

The following problem could occur:
If a job has the same number as byte-size like the job-id of the following one, the username and the filesize of the first one will be strange (job-id and functions stay working).
I would say this will happen that seldom - we should ignore it.
Which user will open the menu exactly in that minute and have a problem with a strange username or filesize?

EDIT: fixed in new commit

[hans-fritz-pommes]

Oh and I changed icons. If you think they're ugly, just revert it

[hans-fritz-pommes]

I have an idea how to fix this mini-problem (identical bytes & job-number). But later

[hans-fritz-pommes]

Ok, now the identical bytes/document-name & job-number-problem is fixed.

[hans-fritz-pommes]

Sorry that I'm so chaotic
I forgot to take care of document names with whitespaces