Fix newline & white space related style errors

Fixed errors
------------
* E121: continuation line indentation is not a multiple of four
* E126: continuation line over-indented for hanging indent
* E128: continuation line under-indented for visual indent
* E202: whitespace before ‘)’
* E225: missing whitespace around operator
* E226: missing whitespace around arithmetic operator
* E231: missing whitespace after ‘,’
* E251: unexpected spaces around keyword / parameter equals
* E302: expected 2 blank lines, found 0
* E303: too many blank lines (3)
* W293: blank line contains whitespace
Fix sentax related style errors

Fixed Errors
------------
W603: ‘<>’ is deprecated, use ‘!=’
E703: statement ends with a semicolon

Ignored Errors
--------------
E711: comparison to None should be ‘if cond is None:’
E712: comparison to True should be ‘if cond is True:’ or ‘if cond:’
Fix line-length related style errors.

Line length limit is 119.

Fixed errors:
------------
E501: line too long
Fix imports related style errors

Fixed Errors
------------
F401: imported but not used

Ignored Errors
--------------
F403: 'import *' used, unable to detect undefined names.
Move and edit requirements file
Expand .gitignore

Based on
https://raw.githubusercontent.com/github/gitignore/master/Python.gitignore
Delete unnecessary files
Rename "build" folder to "src"
Make test user approved by default.
Move all settings to settings.py
Create management commands in manage.py
Move application files into application folder
More style fixes
HTML-related coding style fixes
HTML-related coding style fixes
Merge branch 'master' of github.com:ulgens/esyakutuphanesi
Split off sample datas from code
Little lovely fixes on folder structure

* Move app definitions into application folder
* Move static/ and templates/ folders into application folder
Rewrite management commands with flask-script
Update resetrun for new management commands