Implemented panic handling, graceful shutdown and reporting for all goroutines that don't explicitly handle them. (#2153)

* implemented crash reporting for all goroutine panics that aren't handled explicitly

* implemented crash reporting for all goroutine panics that aren't handled explicitly

* changed node defaults back to originals after testing

* implemented panic handling for all goroutines that don't explicitly handle them, outputting the stack trace to a file in crashreports

* handling panics on all goroutines gracefully

* updated missing call

* error assignment

* implemented suggestions

* path.Join added

* implemented Evgeny's suggestions

* changed path.Join to filepath.Join for cross-platform

* added err check

* updated RecoverStackTrace to LogPanic

* updated closures

* removed call of common.Go to some goroutines

* updated scope capture

* removed testing files

* reverted back to original method, I feel like its less intrusive

* update filename for clarity

* rename

* rename "make grpc"

* rename "abi bindings templates"

* rename "abi bindings templates"

* remove uneeded convertion type

* remove redundant type in composite literal

* omit explicit type where implicit

* remove unused redundant parenthesis

* remove redundant import alias duktape
# Conflicts:
#	core/state/snapshot/conversion.go
#	eth/tracers/tracer.go
#	metrics/cpu_syscall.go
#	trie/trie_test.go

* cmd/geth: dump config

* cmd/geth: dump config

* cmd/geth: properly read config again

* cmd/geth: override metrics if flags are set

* cmd/geth: write metrics regardless if enabled

* cmd/geth: renamed to metricsfromcliargs

* metrics: add default configuration
# Conflicts:
#	cmd/geth/config.go

# Conflicts:
#	metrics/cpu_enabled.go

* Turning off failing test

* Linting (whoops)

* metrics: zero temp variable in  updateMeter

Previously the temp variable was not updated properly after summing it to count.
This meant we had astronomically high metrics, now we zero out the temp whenever we
sum it onto the snapshot count

* metrics: move temp variable to be aligned, unit tests

Moves the temp variable in MeterSnapshot to be 64-bit aligned because of the atomic bug.
Adds a unit test, that catches the previous bug.

Exposing /debug/metrics and /debug/metrics/prometheus was dependent
on --pprof, which also exposes other HTTP APIs. This change makes it possible
to run the metrics server on an independent endpoint without enabling pprof.
# Conflicts:
#	cmd/utils/flags.go
#	internal/debug/flags.go
#	metrics/exp/exp.go
#	mobile/geth.go