Squashed 'plugin/floo/common/' changes from 7244341..8568241

8568241 Whoops. Wrong import for st3.
fea2212 Fix post data to have the right key names. Re-raisein the decorator.
a02868c Set other info in error report.
720b838 Forgot to call f with args and kwargs. Name of stack trace is stack.
8806ff4 Wrap tick function in reactor. Add send_errors decorator that we will soon use in many places. Fix imports.
723aad2 First stab at error reporting stuff.
0f1dc7e Send client info in body of error report.

git-subtree-dir: plugin/floo/common
git-subtree-split: 85682418ff05df467f86e90a6fd1d0f27eec0155
Merge commit 'b37144fb0831fd8c67717a791cc66c8629f4f2f0' into crash_reporting