Log Message:
Update to 45.7.0

Changelog:
    Fixed Message preview pane non-functional after IMAP folder was renamed or moved
    Fixed "Move To" button on "Search Messages" panel not working
    Fixed Message sent to "undisclosed recipients" shows no recipient \ 
(non-functional since Thunderbird version 38)
    Fixed Calendar: No way to accept/decline email invitations when sent and \ 
received messages are stored in the same folder
    Fixed Various security fixes

Security fixes:
 #CVE-2017-5375: Excessive JIT code allocation allows bypass of ASLR and DEP
 #CVE-2017-5376: Use-after-free in XSL
 #CVE-2017-5378: Pointer and frame data leakage of Javascript objects
 #CVE-2017-5380: Potential use-after-free during DOM manipulations
 #CVE-2017-5390: Insecure communication methods in Developer Tools JSON viewer
 #CVE-2017-5396: Use-after-free with Media Decoder
 #CVE-2017-5383: Location bar spoofing with unicode characters
 #CVE-2017-5373: Memory safety bugs fixed in Thunderbird 45.7