dvb/db: Refactor static methods

parseFrontendData and similar don't use any class members, so they are
static. No one else needs to know about them, so don't put them into the
public interface (which will also make Python wrappers). Thus make them
static methods so the compiler can do with them as it pleases.
VirtualKeyboard: Remove some whitespaces
dvb/db: Replace "256" with "sizeof", use switch

Avoid magic numbers in snprintf and friends.
Use a switch/case to prevent comparing more then once.
TimerEdit: Make red "edit" key translatable

Thanks Dima73
Correctly handle parental control in case of swapPiP

Thanks Dima73 for reporting this issue that might lead to a GSOD
Correct cursor behavior config for pipzap in movieplayer

Thanks Pr2 for reporting
Correct clock icons in EPG lists for repeated timers

Thanks Dima73
Only allow number shortcut edit functions when in main Channelselection

Avoids GSOD when e.g. pressing number buttons in simpleChannelSelection
that is used in timer settings and EPGSearch functions
Revert "Only allow number shortcut edit functions when in main Channelselection"

This reverts commit 257f199d4c0adb245d5eaf9183bffcb81af9d303.

As there is a simpler solution
ChannelSelection: Fix type bouq(u)etNumberActions
Avoiding GSOD with NumberActions in SimpleChannelSelection
Auto correction time when conflict timers

Thanks Dima73
Add possiblity to choose for wakup in (deep) standby with zaptimers

Thanks Dima73
Try to solve alternative services craziness

The current service was checked on the group (alternative list) instead of
the real selected and played service.

Thanks Dima73 for finding this craziness what was in our code for a long
time
servicemp3: Don't log subtitle data. Don't alloc on stack.

Subtitle data may be binary image data (e.g. VOB subs). Do not log them
on the console as plain text.

Allocating memory from the stack is bad - the stack will never shrink back.
Use new/delete to allocate a 128k buffer.
servicemp3: Fix init order warning. Allow binary storage in subtitle data.

Fix compiler warning about member initialization order.

Store subtitle data directly into std::string, thus allowing these
to contain binary data (in particular, \0 characters).
message: Inline getInputFD and getOutputFD, remove "ismd"

Implementation is smaller than the method call, inline them.
eMessagePump is only used by ePythonMessagePump, so remove the
unneeded boolean and rename the class to make sure that the old
one is never used.
ChannelSelection: do not greyout services that are in pipzap

As suggested by Dima73
InfoBar: Fix GSOD when closing PIPZap while was played in PIP

Thanks Dima73 for reporting
InfoBarGenerics: Fix GSOD when closing PIPZal while nothing was played