Now saving plugins + theme

Saved wordpress options :
- siteurl
- home
- active_plugins
- template
Remove tmp file after restore
Update script fixes

- Lower github error
- Now include context because github refuses to send datas without it
since this week (can't find any news about it)
- More efficient code in wfc_theme_customizer.php
force update + more bugs fixed
Removed a few notice + doc for new function
Merge pull request #30 from stevecfischer/fix-53

Merge fix-53 into master