Write access to previously open PDFs

What steps will reproduce the problem?
1.Open a tex file and view the PDF.
2.Open a different tex file and view its PDF.
3.Try deleting the PDF from step 1.

What is the expected output? What do you see instead?
After viewing a different PDF, the program should release the file so that the 
computer can have write access again.
There also should be a close PDF preview button in texmaker that allows the 
user to close the current PDF in view so that it can be deleted from Windows 
Explorer if necessary without closing the embedded PDF panel.

What version of the product are you using? On what operating system?
Texmaker v4.3 in Windows 8.1 Enterprise

Please provide any additional information below.

Original issue reported on code.google.com by kyle.jo...@aggiemail.usu.edu on 13 Nov 2014 at 5:21

code-google-com / texmaker

Write access to previously open PDFs #1415