Fixed#171, style storages can no longer be created with illegal filename characters, they are replaced with underscores.
Originally committed to SVN as r553.
Changed some types to lower the amount of int/size_t inconsistencies. This might have introduced some stupid bugs... beware!
Removed old, unused "project file" code. (cleanup)
Fixed bug #195: "Join (as karaoke)" is broken when 2 lines don't follow immediately after another
Implemented feature req #184: Text Only Export
Fixed bug #180: conversion from srt to ass doesn't specify WrapStyle
Implemented feature req #188: highlighting of currently selected style in the styles manager
Originally committed to SVN as r537.