Improve templating with ModuleTemplateLoader #52

* Added ModuleTemplateLoader which loads from installed modules
* Updated tests to use the ModuleTemplateLoader in addition to
  the DictLoader (which substitues function loader)
Merge pull request #58 from sharoonthomas/develop

Improve templating with ModuleTemplateLoader #52
Update to use flask 0.10

* flask 0.10 separated json related functionality into flask.json
* _lookup_object is now deprecated
* fixes #68
Merge pull request #69 from sharoonthomas/feature/issue-68

Update to use flask 0.10
Implement lazy rendering #67
Merge pull request #70 from sharoonthomas/feature/issue-67

Implement lazy rendering #67
Flake8 Purification #1730

* Fixed indentation and unused code for all the files in module to
  improve readability of code.

Issue ID: 179001