Minor: Change execution error message
Minor: Revert gir url in requirements.txt

* Added fonttools github repo for testing
* Changed flask-rq git url, as got this error on Mac OS X with http url:
```
Obtaining Flask-RQ from
git+http://github.com/xen/flask-rq.git#egg=Flask_RQ (from -r
requirements.txt (line 31))
  Updating ./venv/src/flask-rq clone
  Complete output from command /usr/local/bin/git rev-parse
(detachedfromorigin/master):
  fatal: ambiguous argument '(detachedfromorigin/master)': unknown
revision or path not in the working tree.

Use '--' to separate paths from revisions, like this:

'git <command> [<revision>...] -- [<file>...]'

(detachedfromorigin/master)

----------------------------------------
Command /usr/local/bin/git rev-parse (detachedfromorigin/master) failed
with error code 128 in
/Users/dcrossland/src/bakery-xen/venv/src/flask-rq
Storing complete log in /Users/dcrossland/.pip/pip.log
make: *** [setup] Error 1
```