convert the remainder of users module to routes
correct casing in route name
reafactor other (non-Users) uses of sortlink template plugin
Merge pull request #2032 from craigh/routing-usersmodule

convert the remainder of users module to routes
Updated routing documentation, fixed #1793
correct routing config in users module
remove $args arrays and refactor to use subrequests as needed
Merge pull request #2033 from craigh/Usersmodule-removeargs

remove $args arrays and refactor to use subrequests as needed
always allow admin to override user theme selections
add prefix for psr4 themes
convert SeaBreeze to psr4 as demo
Merge pull request #2035 from craigh/thememodulefixes

Theme module fixes
Removed "/admin" route prefix.
make config check for new Theme bundles. refs #1935
correct display of preview image
Merge pull request #2040 from craigh/themefix

make config check for new Theme bundles. refs #1935
do not load Bootstrap in non-admin controller for non-bundle themes. refs #2041
Merge pull request #2043 from craigh/themecompat

do not load Bootstrap in non-admin controller for non-bundle themes.
fix BC concerns. refs #2043 ping @cmfcmf
fix BC concerns - part 2. refs #2043 ping @cmfcmf