Reworked and updated time zone settings

Signed-off-by: Piotrek <pepe@attika.ath.cx>
Signed-off-by: Piotrek <pepe@trosti.pl>
According to http://pubs.opengroup.org/onlinepubs/007904975/basedefs/xbd_chap08.html, the part describing the TZ environment variable, only colon is a valid separator in offset.

Signed-off-by: Piotrek <pepe@attika.ath.cx>
Signed-off-by: Piotrek <pepe@trosti.pl>
Don't replace the time zone abbreviation with GMT.

Signed-off-by: Piotrek <pepe@attika.ath.cx>
Signed-off-by: Piotrek <pepe@trosti.pl>
Comment out unnecessary pre-mappings.

Signed-off-by: Piotrek <pepe@attika.ath.cx>
Signed-off-by: Piotrek <pepe@trosti.pl>
Change the default DST settings in the web UI to uclibc's defaults, which are also the defaults for the US.

Signed-off-by: Piotrek <pepe@attika.ath.cx>
Signed-off-by: Piotrek <pepe@trosti.pl>
Add some new cities to the time zone list.

Signed-off-by: Piotrek <pepe@attika.ath.cx>
Signed-off-by: Piotrek <pepe@trosti.pl>
Change the name of some time zone list entries.

Signed-off-by: Piotrek <pepe@attika.ath.cx>
Signed-off-by: Piotrek <pepe@trosti.pl>
Replace "Greenwich Mean Time" with "London" in the web UI.

Signed-off-by: Piotrek <pepe@trosti.pl>
Add Lisbon and Dublin to the time zone list.

Signed-off-by: Piotrek <pepe@trosti.pl>
Add entry for Coordinated Universal Time.

Signed-off-by: Piotrek <pepe@trosti.pl>