fix compress:windows

- `compress:windows` was broken due to the installer.exe being inside dist/windows instead of build/releases/...
- works now as expected, putting the installer.exe inside a zip-file in build/releases/Popcorn-Time/win/.
Fixes #866
#877 - Reverse subtitle delay shortcuts to behave like VLC
Redo  #866 fix. Bit cleaner
Re-add checkEmpty
Fixes #500 - Don't highlight/toggle "Subtitles Off" when clicking subtitle icon
add native buttons for windows

closes #972

-thanks @MrVaykadji for the icons
Fix flex bug on Tv and Movies lists

commited out outdated code.
setup native os buttons for windows
Work on Drag & Drop styling
redo app.js indentation
remove obsolete theme components (wip)

-remove popup styl
-begin work on cleaning up details
en lang addition.
Merge #923
Fix #986
fix  #987

- transform 720 and 1080 into 720p and 1080p as in commit 40b8432
Merge pull request #988 from MrVaykadji/patch-3

fix  #987
Update initializing.tpl

Goes along with 5c89cad52f6add803b9907e477ad82b311dd1de6 that already made "Made with" and "by a bunch of geeks from All Around The World" translatable.
app.js indentation

-sublime seems to think this is better...
potential fix for #984

-add a timeout for dragout event on drag event set drag true to prevent
flickering