* pkgs: refactor needless quoting of homepage meta attribute
A lot of packages are needlessly quoting the homepage meta attribute
(about 1400, 22%), this commit refactors all of those instances.
* pkgs: Fixing some links that were wrongfully unquoted in the previous
commit
* Fixed some instances
The heroku tool has changed and now downloads a binary to do bulk of the
work.
This PR also downloads the binary to wrap it properly, but due to
https://github.com/NixOS/patchelf/issues/66 we cannot ```patchelf``` the
binary and it doesn't work.
So for now we instead wrap it in a buildFHSUserEnv so at least things
are working again.
Once the patchelf issue has been solved, I'll update this again.
