Consolidate apps into oc_erchef at the top level

Consolidate 8 applications into oc_erchef that otherwise aren't used outside of erchef. The apps include their history which is why there are so many commits. The last commit has the changes necessary to consolidate the rebar.configs down to a single file. It also has some modifications to re-enable the common_test suites. The mechanism by which the consolidation occurred is as follows:

```
for i in oc_chef_authz oc_chef_wm chef_index chef_db chef_objects depsolver;do cd deps/$i;git clean -ffxd;git co master;mkdir -p apps/$i; git mv `find . -type f -depth 1` apps/$i;git mv `ls |  grep -v apps` apps/$i; git ci -m "Moving to apps/$i";cd ../..; git remote add -f local_$i ./deps/$i/.git;git merge local_$i/master -m "Merging $i into apps";done;
```

Deprecation notes:
+ https://github.com/opscode/chef_db/pull/58
+ https://github.com/opscode/chef_index/pull/18
+ https://github.com/opscode/chef_objects/pull/85
+ https://github.com/opscode/oc_chef_authz/pull/39
+ https://github.com/opscode/oc_chef_wm/pull/116
+ https://github.com/opscode/depsolver/pull/23