Add visual indication for drag&dropping files, make dropzone bigger

When you drag a file over a post-status-form it now highlights the area as a drop zone, drop zone size has been increased from just text-box to whole form

I also removed dangerous duplicate logic, no need for media upload button to also listen to drag&drop events

oh finally! i wanted to do it myself back in the day but couldn't. very nice*!

*not a code review

added 1 commit

• 1308fdd3 - update changelog

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i would suggest adding a tiny-tiny fade-in/fade-out transition when overlay

otherwise code looks great and works great

added 1 commit

• d3187720 - remove useless captures

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added 4 commits

• d3187720...4f66221a - 3 commits from branch develop
• 855b8d4d - fix conflict

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added 1 commit

• ea2b2a35 - add fade-in fade-out

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resolved all threads

merged

mentioned in commit 02ba9924