1. Optimized loading by delaying loading of languages and addons. [PERF]
2. Start button will only be enabled when media is added, disabled when there is no media. Reduce Error Prompt. [UI]
3. Resolved issue where stop button goes missing when you maximize window. [UI]
Merge pull request #1 from HeHeHunter/master

HeHeHunter "Performance and UX change"
Code optimized!