Merge pull request #1308 from Arantor/release-2.1

More fixes
SMF is HTML5 now, so SSI should be as well.

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #1309 from Oldiesmann/release-2.1

SMF is HTML5 now, so SSI should be as well.
Another minor HTML5-related fix

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #1310 from Oldiesmann/release-2.1

Another minor HTML5-related fix
! 'modified_reason' didn't always have a default value (fixes #1304)

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #1311 from Oldiesmann/release-2.1

! 'modified_reason' didn't always have a default value (fixes #1304)
Allow admins to change a user's theme even if the option to change themes is disabled (fixes #1306)

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #1312 from Oldiesmann/release-2.1

Allow admins to change a user's theme even if the option to change theme...
Merge pull request #1313 from Arantor/release-2.1

! There are simply just too many permutations for handling week numbers ...