Bug 36409: Fix capitalization for AcquisitionsDefaultEMailAddress and SerialsDefaultE...

Bug 36409: Fix capitalization for AcquisitionsDefaultEMailAddress and SerialsDefaultEMailAddress

Replace all instances in files with correct capitalization for the
sysprefs:
SerialsDefaultEMailAddress
AcquisitionsDefaultEMailAddress

Test plan:
1. Apply patch
2. Run database update
3. Go to Administration > System Preferences > Acquisitions
-> Confirm correct capitalization for AcquisitionsDefaultEmailAddress
   (should be "Email", not "EMail")
4. Go to Administration > System Preferences > Serials
-> Confirm correct capitalization for SerialsDefaultEmailAddress
   (should be "Email", not "EMail")
5. Use git grep to confirm no remaining instances of "EMail" in the code
   (other than the new dbrev, original dbrev and original release notes)
   e.g. git grep --files-with-matches "EMail"
6. Confirm the test plan for Bug 20755 still works

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit c1a137410065a46f6cd8d31a380d0da95c2169d6)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>