[#46][#19][#6]Thorough code cleanup of init.py

- Operators named with Blender convention.
- Classes/Function renamed for readability/clarity.
- String joining performance fixed.
- Reorganization for flow/Broke up code.
- Deleted some old and irrelevant comments.
- General code cleanup.
[#46][#19][#6]Some more code cleanup of init.py

Some more code cleanup...
[#46][#19][#6]Even more code cleanup of init.py

- changed class names with '_' in names to fit StudlyCaps convention.
- functions named with joined_lower convention.
- fixed some minor naming inconsistencies.
[#46][#19][#6]Thorough code cleanup of add.py

- Classes/Functions renamed for readability/clarity.
- String joining performance fixed.
- Reorganization for flow/Broke up code.
- Deleted some old and irrelevant comments.
- General code cleanup.
[#46][#19][#6]Some small tweaks

- General code cleanup.
[#46][#19][#6]Thorough code cleanup of export.py

- Classes/Functions renamed for readability/clarity.
- String joining performance fixed.
- Reorganization for flow/Broke up code.
- Deleted some old and irrelevant comments.
- General code cleanup.
- Spelling/Grammar.
- Small correction to dds_converter.py
[#46][#19][#6]Small Correction

Tested this and it didn't work so I've reverted to the old code which
does work.
Merge pull request #52 from travnick/feature/code_cleanup

[#46][#19][#6]Thorough code cleanup of init.py, add.py, export.py, and small tweaks to the others