- rename module OP_MTL_fix_all_material to OP_MTL_fix_all_materials.
- rename operator BBP_OT_fix_all_material to BBP_OT_fix_all_materials.
- rename module UTIL_naming_convension to UTIL_naming_convention.
- change some translation contexts to correspond with this change.
- add translation context for operator, menu, panel and etc. and their associated properties.
- improve some name and description but not finished.
- move reset BME material function inside BMEMaterialsHelper.
- rename variable of collection visitor in BME adder operator for clear meaning.
- replace some message box to report in ballance elements reset operator, BME materials reset operator and rail UV operator
bring ballance virtools helper used fix_texture (renamed as fix material to correspond with the real object operated by this function) into blender plugin.
