Remove old hacks

[malisipi]

• Remove/Replace old hacks (with system-calls).
• Improve extension support
• Fix tab-nav crashes

[malisipi]

Also this branch will fix #11

[malisipi]

Fix needed: Broken popup menu of selectbox

[malisipi]

I am merging this pr since I never seen with any error. If you have a issue that related with this pr, let me know