Cleanup bug reporting

Added support for the bugzil.la shorturl when reporting bug info and looking for bug mentions, and cleaned up the mess of info to be more readable.

Before:
[15:30] <dolske> bug 718253
[15:30] <dolskebot> Bug https://bugzilla.mozilla.org/show_bug.cgi?id=718253 nor, --, mozilla12, dolske, RESO FIXED, Critical omission from en-us spelling dictionary

After:

[16:46] <dolske> bug 718253
[16:46] <dolskebot> https://bugzil.la/718253 — FIXED, dolske — Critical omission from en-us spelling dictionary
[16:48] <dolske> https://bugzil.la/700000
[16:48] <dolskebot> Bug 700000 — REOPENED — Buy Firefox developers some beer.
[16:49] <dolske> https://bugzilla.mozilla.org/show_bug.cgi?id=123
[16:49] <dolskebot> Bug 123 — WONTFIX, ramiro — Form menus not wide enough