Django-markdownx

**Fixes**:
- Removed testapp package from the release

**New**:
- JS now ensures that the element is visible before attempting to resize it (files read as `binary` are not converted to `str`).
- Documentations compiled via `./create_docs.sh` now get `.nojekyll` files added in the root directory by default.
- Added migrations for testapp

**Fixed**:
- Fixed JS monitoring in SVG file - again.
- Issue in `dev.py` preventing the installation of documentations dependencies is fixed.
- `package.json` is generated when using Vagrant or Docker environment

**Improved**:
- Contribution documentations are now even more comprehensive.
- `dev.py` now deletes SQLite file created for the test.
- Support of minified css
- Static source files are now excluded from releases

* url(r'^upload/$', ImageUploadView.as_view(), name='markdownx_upload'),
* url(r'^markdownify/$', MarkdownifyView.as_view(), name='markdownx_markdownify'),

MARKDOWNX_IMAGE_MAX_SIZE not respected 65 issue fixed.

**Fixed**:
- Fixed the bug that caused non-SVG files being screened for JavaScript.

**Other**:
- Minor clean ups.
- Added documentations for [developers' environment](https://neutronx.github.io/django-markdownx/contribution.html).
- Updated module documentations.
- Made `dev.py -no-container` and `dev.py -c` compatible with Python 2.

**New**:
- Django 1.11 support
- Documentations
- Developers' environment
- Support for `ctrl/cmd + ]` and `ctrl/cmd + [` for indentations (line and block).
- Support for `Tab` and `Shift + Tab` (line, selection, and block).

**Improved**:
- Pure JavaScript front-end without external dependencies.
- Additional settings for added flexibility.