(web) Add backend thread tags to Thread IDs on Hashrate Report

refactor POW selection algorithm

Avoid that we do multiple lookups to `std::map` to find the OpenCL
kernel binaries.

- add helper method `GetAllAlgorithms()` to get all active POW
algorithms
- select max scratchpad memory size based on the dev pool and user
algorithms

In the current implementation the POW algorithm in dev pool section of a
currency will not be taken into account during the binary creation.
This PR changes the behavior and allow to create binaries for more than two POW algorihms.

version increase to 2.7.1

remove APP SDK with OCL SDK light

fix bittube2

new bug fix version

Grammar fix

update documentation and link AMD OCL-SDK light

Since #2080 bittube2 is broken.

- reintroduce special AES function for bittube2

release 2.7.0

increase version to 2.7.0

fix default interleave value

The default value for interleave was wrongly set to 50.

Remove the value and take the devault from the default constructor instead of side channeling it from the json parser.

remove usage of cn_v7 if cn_v8 is enabled

OpenCL: auto tuning option

OpenCl: fix NVIDIA

Cleanup missing change from #2101

NVIDIA is using clang as device compiler so the reciprocal optimizations was disabled with #2104.

- re-enable optimized reciprocal calculation

Add an option to brute force intensity settings and lock in at the intensity with the highest hashrate.

- update decumentation of the `interleave` option to mention the side effect with `auto-tune`
- disable `interleave` auto adjustment if `auto-tune` is enabled
- jconf: add `auto-tune` as optional option

- fix broken compile: change used `ULL` to `UL` because `UL` is defined as 64bit
- fix memory copy to shared memory via vload8 (somehow it create wrong access)

add interleave documentation

OpenCL: auto config two threads per GPU

fix clamp implementation

The auto config generates for AMD devices now by default two threads per GPU.

- remove the savety 128MiB memory now only from the max available GPU memory not from the avaialble memory for one alloc call
- extend the memory documentation in amd.txt

Due to a wrong implementation clamp was not working.

- add image to describe interleave better
- add tuning description

OpenCL: opimize reciprocal calculation

Please add Cryptonight-Superfast

OpenCL: comp mode optimization

use for non clang (Rocm) OpenCL a optimized reciprocal calculation without lookup table.

Co-authored-by: SChernykh <sergey.v.chernykh@gmail.com>

Disable compatibility mode if intensity is a multiple of worksize. In that case enabled compaibility mode will only slow down the miner.

update currencies

OpenCL: thread interleaving